Since the release of Dr. Lieberman’s study I’ve had a few requests from folks wanting me to show my test results from a gait analysis I had done at the UVA human performance lab. They’re curious to see how my Ground Reaction Force (GFR) chart compares with the one shown in the Nature video showing a barefoot runner (I’m assuming Lieberman himself) landing on a strike plate with a GFR chart beneath.

In the tests I did at UVA, I was wearing three different pairs of shoes (I was never tested barefoot): tai chi shoes, NB-MF800’s and NB-790’s. I’ve pasted in three graphs below. The first two are of a barefoot runner running with a heel strike, a barefoot runner running with a forefoot landing and the third graph is of me with the graphs of all three of my tests overlaid onto the same chart in three different colors.

GRF for a Heel Striker

GRF for a Forefoot Striker

GRF for Danny

Notice the differences in GFR between the three runners shown as a multiple of Body Weight measured during the initial weight-bearing phase. The Barefoot runner had a multiple of 1.85 x Body Weight. To make the comparisons fair, let’s assume all three tests were done with a runner who weights 150 lbs., that would mean (with a GFR of 1.85 x Body weight) that his heels were absorbing a force of 277.5 lbs. upon impact. Let’s say that his heel has an area of 5 sq. inches. that would mean that his heels were experiencing an impact of about 55.5 lbs./sq. inch. Ouch!!!

In the second figure, the runner is landing on his forefoot and his GFR is 2.64 x Body Weight during his support phase which figures out to 2.64 x 150 lbs. = 396 lbs. Now let’s say that the area of his forefoot is approximately 16 sq. inches. That would mean that his foot would be absorbing about 24.75 lbs./sq. inch. … or less than half of what the heel striker feels.

In the third figure I’m landing in a midfoot (or fullfoot) strike which means that the entire bottom of my foot is landing as my foot hits the ground. My GFR was measured at 2.47 x Body Weight or 2.47 x 150 lbs. = 370.5 lbs. Now, if the surface area of the entire bottom of my foot is roughly 30 sq. inches. (I’m a size 9.5 shoe), that would mean that the impact felt by my feet would be approximately 12.35 lbs./sq. inch. or half as much as the forefoot striker. That’s less than 25% of the impact per square inch the heel striker feels and half of what the forefoot striker feels. You can also see that my GFR was the same no matter which shoes I was wearing. I imagine that it would still have been the same had I been tested barefoot… possibly implying that there’s something to be said for working on improving your running technique. It’s about the runner, not the shoe.

I’ve used 150 lbs. as a standard weight for all three runners because I don’t know how much Dr. Leiberman weights. I also used the size of my feet in my calculations because I also don’t know his shoe size. BUT, the point I’m trying to make here is that whether or not you run with shoes on, your impact with the ground will be most if you land in a heel strike because there’s a lot of force going into a relatively small area of your foot. Subsequently, if you land in a forefoot strike, you land with more area of your foot touching the ground and it spreads the force of impact over a larger area thereby reducing the amount of impact per square inch. And lastly, if you land in a fullfoot strike, you spread the impact out over a much larger area and lower your impact per square inch even more still.

Since greater impact with the ground can most likely be directly related to greater incidence of impact injuries, this all boils down to one big question. How do you lower your impact with the ground so that you don’t hurt yourself when you’re running. My premise is that although some types of shoes can reduce shock and impact, it’s the runner who, in the end, is responsible for learning how to manage his or her impact with the ground in a way that consistently works. This is the need that is presented to every runner and it is one of the main reasons why ChiRunning was developed.

Dr. Liebermans study was a good beginning into seeing the difference in impact forces between shod and barefoot runners. Next, I would like to see a study comparing the difference in impact between heel strikers, midfoot strikers and forefoot strikers; with bare feet, with minimal shoes, racing flats, and with your basic high-heeled running shoes.

There are times to run with a forefoot strike. There are times to run with a fullfoot strike. And, there are times to run (believe it or not) with a heel strike. I’ll cover these in a future blog.

Run well…be well,
Danny

In response to all the current interest in barefoot running (spurred on by Chris McDougall’s Born to Run book and the recent study published in the journal Nature by Dr. Daniel Lieberman, suggesting that barefoot or minimal-shoe running creates less impact on your legs) I’ve come up with a list of recommended shoes to try if running barefoot is just not what you’re drawn to. The shoes on this list represent only a small smattering of the spectrum of shoes available to those wishing to try running in a low-profile, minimal shoe instead of the basic “high-heeled sneaker that has been the trend for the past 40 years.

Bear in mind that any switch to either barefoot running or to a more minimal shoe (than you’re currently wearing) will require you to make a GRADUAL transition into the new way of running. If you’re going the minimal shoe route, start off by wearing them for brief periods around the house and for only short runs until you see how your body responds to the change. As your body “tells you” that it’s ok, you can slowly increase your time or distance accordingly. This isn’t macho training, it’s sensitivity training, so be smart about it. If you feel the slightest bit of discomfort in your plantar fascia, your ankles or your calves…back off and try it again tomorrow. As Barefoot Ken Bob Saxton says, “Don’t strike the ground. If you do it’ll strike back!” The idea of running barefoot or running in a minimal shoe is to feel what your feet are telling you about how to create less impact with the ground… so that you don’t get injured. It just wouldn’t make any sense to run in minimal shoes if you didn’t listen to what your feet are telling you.

The other thing I’d like to add is that the shoes listed here are only recommendations. Since everyone has different feet and different tastes when it comes to comfort and feel with their shoes, I leave it up to you to do the research at your local running shoe store to see which shoes actually work best for your feet and running needs. If all of the shoes choices is just too overwhelming…keep it simple and Go Barefoot!!!

Good luck with the journey.

Danny

The List

NB-790 (9 oz.) One of the best ever made for all terrains, from running a marathon on pavement to ultra trails. This shoe might be too much for someone really interested in feeling the barefoot feel. (discontinued in men’s models only…go figure…or better yet, write NB and complain) $60
NB-505 XC racing flat (7 oz.) very light, flexible and fast on trails or roads. $60
Adidas – Adizero Rocket (7.2 oz.) very flexible and wicked fast – better for narrow feet. $90
Brooks Mach II Spikeless (7 oz.) ultra-thin carbon rubber aggressively lugged sole – $60
FeelMax – Niesa 1mm thick sole with Kevlar to protect against sharp objects (Barefoot Ted likes them) Some complain that they’re too hot, but they are extremely minimal and give a good sense of the ground against your feet. $80
VivoBarefoot EVO– I’ve tried the Vivo street shoes and I’m waiting to be sent a pair of their running shoes to test (not available to the public yet). I love my street shoes and they are my favorite traveling shoe. They’re wonderful for any kind or any amount of walking.
Vibram FiveFingers – KSO’s are the most popular model of the VFF’s and I can see why. They’re thin, flexible, easy to get on and off and the next best thing to running barefoot. I prefer my Treks when I’m trail running because they have more traction in the dirt.
ECCO – haven’t tried them yet because I can’t afford a pair (hint…hint)
Wilcor Aqua Shoes – Bought these at a hardware store in Hot Springs, NC for $10 and they’ve proven to be one of the best trail and wet-running shoes I’ve ever had on my feet. They’re like moccasins with an attitude. Get some if you can find them for sale somewhere (not in running stores). This shoe, like most shoes designed for water sports and poking around tide pools at the beach, is a great way to run close-to-barefoot without spending over $30.
PUMA Cabana Racer II – (7 oz.) Was first introduced as a lightweight racing flat in 1981. Features a leather upper, EVA midsole and rubber outsole. As far as I can tell it is the exact same shoe brought back from the dead. $45
Asics Hyperspeed 3&4- (7 oz.) I haven’t run on these shoes myself, but I’ve heard from a number of folks that this is a good minimal shoe…very light and very fast. The downside of the shoe (as with many racing flats) is that they’re very narrow in the toe box, so they’re off my shopping list because my feet are EEE width. It’s a shame they don’t make racing flats in widths…they could multiply their sales by tenfold. $60

TRAIL SHOES
La Sportiva Crosslite – A great trail racing flat built low to the ground with extremely aggressive treads. Not a true minimal shoe, but one of the more minimal (while still aggressive) trail shoes. Reasonably light (10.0 oz.) for a trail shoe. $85
INOV-8 Rocklite 295 – (8.5 oz.) This is a fabulous shoe for trail runners looking for a very low-profile, light-weight shoe with great traction and flexibility. Sticky rubber soles with very aggressive lugs. They have a nice rounded toebox with plenty of room for my paddle feet. This is a more subtantial trail shoe for those looking for a good, dependable, lightweight, aggressive-soled shoe. $90
INOV-8 Talon 212 - (7.5 oz.) This is the stripped-down, mininal heel lift version of the 295 reviewed above. It’s a no-bones-about-it-flat-out trail racer…. a bit narrower in feel than the 295, but not uncomfortably so. It hugs your foot well and transfers the traction from the sticky rubber soles directly into your feet. I feel like a spider with them on. I haven’t tried walking up the side of a brick building yet, but they tempt me to try. I feel very fast and agile in them, and I’m sure I’ll be running in these at the next USATF Nat’l Trail Championships later this year. Hats off to INOV-8! Note: These shoes have very minimal cushioning and might not be for everyone. If you run on very hard-packed trails, these might be too minimal for you unless you’re minding all your ChiRunning P’s & Q’s. If you’re doubtful, go for the 295’s. (BTW, the numbers show the weight in grams of the shoe model!) $100
NB-MT100 – (7.0 oz.) One of the lightest trail shoes ever made. Very flexible and breathable…also drains well when wet. Great for most trail running, but tend to lose traction on wet surfaces, especially wet rock. Personally, I’d like the lugs a bit more aggressive for these North Carolina mountains, but they’re totally adequate on dry trails. $70

In case you missed it, there was an article in last Sunday’s NY Times about how the “barefoot running” trend is effecting the shoe industry. Actually, it’s not so much a barefoot trend as it is a current upsurge in the questioning of the running shoe company’s ability to produce a shoe that actually has any effect on running injuries. ChiRunning was named as one of the organizations helping to promote good running technique and endorsing more of a minimal shoe approach to running.

The big debate is whether or not building more cushioning and structure into running shoes has the advertised effect or if it’s just another case of corporate marketing looking for an effective way to sell shoes to an uneducated populace. Well, in answer to the first part of the debate, as we’ve seen by the percentage of runners who get injured every year, nothing has changed since running shoes for the general public began being produced in the 1970’s. If anything, the injury rate has gone up. And, in answer to the second part of the big debate, yes, it seems to have been a very good marketing ploy that sold gazillions of shoes to people thinking that they’d be safe in their running by buying the right shoe.

I’m so thankful that articles like this are starting to surface in the national media. More attention needs to be paid by the shoe industry to make shoes that fit the needs of an ever-growing population of runners who are working on changing their running form, to prevent injuries, instead of thinking that the right shoe will do the job. For ten years now ChiRunning and ChiWalking classes have been teaching runners and walkers how to run and walk pain-free, injury-free and faster. Check out our schedule of classes if you’re interested. And, while you’re there, check out the results of a West Virginia University poll done with 2500 ChiRunners which reports remarkable findings on the effectiveness of running technique improvement on injury rates.

There are a number of forward thinking shoe companies out there that are working on producing less of a shoe and that’s good news for those of us who are no longer willing to suffer through the over-built “corrective” shoes that have been the norm since the running boom started in the ’70’s. actually almost all of the running shoe companies sell shoes that are perfectly good for the midfoot striker…but many runners are scared away by the model name “racing flat.” Most racing flats have all the great attributes a midfoot runner craves: lots of flexibility in the sole, great ventilation, very minimal lift in the heel and (until the secret gets discovered by the shoe companies) a cheap price. I wear NB-790’s which cost $45 online (while the supply lasts) and which, in the past few years, have been one of the best selling running shoes NB has ever produced. But, as with all great running shoes…they’ve decided to quit producing what I’ve considered the perfect shoe. Go figure. I’m now looking at FiveFingers, Adizeros, La Sportiva, and yes, even the Nike Free for the next “ideal” shoe.

Viva la revolution!
Danny

p.s. Since the article in the NY Times came out it is the 8th most emailed article.

http://www.nytimes.com/2009/08/30/business/30shoe.html?pagewanted=1&_r=1

Well, I finally did it. After 38 years of running I finally bought myself a heart rate monitor. Why now? After that many years of running you’d think by now I would be able to Body Sense everything I needed to know to run injury-free and run long distances without burning myself out. The truth is, I can do that. But what I’m currently in the midst of is developing specific training programs for beginner, intermediate and advanced runners for everything from a 5k to a marathon…and beyond.

The key to training and conditioning oneself properly for long distance running and walking (and the most sane way), is aerobic training which was used quite effectively by Arthur Lydiard, one of the best running coaches ever. Training in your “aerobic zone” means that you do the vast majority of your workouts at a pace where you’re not gasping for breath or feeling like your heart is trying to jump out of your chest. So, if I’m going to be giving advice I need to make sure it’s good, accurate advice and not just theory.

There have been volumes of books written about how to train for all of the distances I mentioned, but what is needed today more than ever is a system that helps runners and walkers to realize their fitness goals in the safest and most energy-efficient way. To me that means not just putting out another training manual that tells you how many minutes or miles to run during each workout. That’s easy. But if you’re training for a 10k race, you’ll get a lot more bang for your training buck if you add great running technique onto all of that great conditioning. My goal is to offer training programs for running and walking that not only help you too increase your conditioning level by training within your aerobic zone, but actually help you to master your technique at the same time. As long as you’re going to be out there, why not kill two birds with one stone?

So, to make a long story (what could be an entire book, in fact) short, I bought a heart rate monitor so I can measure the effect that any of the ChiRunning form focuses might have on my performance and efficiency…measured in heartbeats per minute. For me it’s a biofeedback tool for measuring whether or not my efficiency is effected by making slight adjustments in how I run or walk. I’ll let you know how it goes.

My first use of the heart rate monitor was to measure my resting heart rate as soon as I opened my eyes… it was 41. I’m going out for a hilly trail run this morning, so we’ll see if I can get this thing to help me run hills more easily.

See ya later,
Danny

I’ve received a lot of ChiRunning email lately responding to my blogs about trail running. One topic that has popped up more than once is poison ivy, that nasty little plant that loves to make your skin look like an overcooked cheese pizza. I’m highly allergic to it, so I can empathize with all of you out there who spend a good part of your summer running in places other than your favorite trails, because they’re covered with the stuff. I flatly refuse to let a little toxic plant ruin my trail running so I spend a couple of hours a week covered from head to toe, in 80º heat, clearing trails near my home here in Asheville. I’ve never run in a place where poison ivy is the predominant ground cover.

Apart from resorting to clearing trails, I have found a great way to prevent the onset of a rash or to cure an infestation before it grows into a full-blown systemic case (which has happened every summer since I moved here three years ago).

Here’s what I do. When I return from a run where I know I’ve brushed up against poison ivy, I immediately throw all my running clothes in the washing machine with plenty of soap and a small amount of bleach…even my shoes! I then take a shower and pretend that I’m trying to scrub my skin off of my bones, using plenty of soap. I use a soap made from Jewel Weed which is an antidote for poison ivy, but any strong soap will work. Never take a bath after being in poison ivy or if you have an existing rash! Always take a shower.

As soon as I get out of the shower and dry off, the first thing I do is swab my legs with hydrogen peroxide to neutralize any oil residue that might still be on me. So far (knock, knock) I haven’t had a single case of it this year…and I’ve waded through plenty of it!
If I happen to get a rash (it starts of as little blisters on your skin) I immediately reach for the hydrogen peroxide, in which I soak cotton balls, and scrub the little blisters hard enough to break them. Then I repeat the hydrogen peroxide scrub about 4-5 times a day until the rash dries up and goes away. This technique has worked 100% for me and since I discovered it at the end of last summer. Since then I’ve never had a case of poison ivy last for more than about 3 days, which is completely acceptable compared to the usual 3 weeks (after a round of steroids) it used to take to get over it. So, now you don’t have to let a little poison ivy stop your summer trail running fun, you can go running in the hills to your heart’s content.
Happy trail running,
Danny

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Since we’re pretty much smack in the middle of winter I’ve decided to write a blog dealing with the subject what kind of shoes to wear when running under the adverse conditions some of us die-hard outdoor runners come up against during this time of year. For those of you who live in the warmer climates… I guess you’re just going to have to vacation in the North somewhere this winter to try these out.

After spending most of my life in Boulder, Colorado I came up against probably every possible combination of winter running I can imagine. So, here’s the first installment in what I hope to someday publish as the ChiRunning cold weather running guide. For other running articles I suggest you visit the Library of articles on our website which cover many other aspects of ChiRunning and ChiWalking.

Winter running shoes. Where are they, and why haven’t the shoe companies done more to support running in snowy, cold, and wet conditions? The best thing I’ve found are Gore-tex trail shoes. These work much better than most running shoes, for a few reasons. First of all they’re wind-proof, which is a huge advantage over those mesh-toed, well-vented running shoes we wear most of the year. Secondly, they’re pretty much water-proof, unless you go into a frozen puddle that’s deeper than you think. These first two points make them warmer than your basic running shoes. I have two pairs that I use. One pair (my favorite) is made by Asics and my other pair are New Balance.

Both of these shoes work well, but they both have the same downside characteristics. Because they’re designed to be “trail” shoes, they’re stiffer and heavier than most regular running shoes. Since I wear thick wool socks for winter running, I usually buy these shoes a half size larger to make room for the bulky socks and this makes them even heavier still. I haven’t been able to do anything about the weight of the shoes, but I have altered the soles of the shoes to make them more flexible in the forefoot (which is crucial to avoiding plantar fasciitis). I take a sharp knife and cut flex grooves across the forefoot section of the sole of the shoe. Even with molded-in flex grooves, I find most trail shoes to be too thick in the forefoot to allow for enough flex. I cut the grooves deep enough to make a noticeable change in the flexibility. Everyone likes different amounts of flex, so if you do this to your shoes, start with cutting shallow grooves and work your way deeper if you need to.

For those of you who, for whatever reason, decide that Gore-tex shoes aren’t your cup of tea, I’ll write a subsequent blog dealing with how to adapt regular running shoes to winter running.

Bundle up and I’ll see you out there!
Danny

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Because I’m a lifelong advocate of fitness walking and injury-free walking, I’m always trying to come up with the simplest way to get walkers to move along the ground in a way that produces the least amount of impact to the feet, knees, hips and lower back. The answer to this dilemma is different depending on whether you’re doing ChiWalking or ChiRunning. I’ll begin with you ChiWalkers.

When I watch people walk I’d conservatively estimate that over 90% of all walkers lock their leading knee as their heel touches the ground in front of them. The problem with this (and most people don’t know this) is that when your heel strikes the ground ahead of your center of mass, it creates a braking effect on your forward motion. So you’re essentially pushing yourself forward with your rear leg while you’re simultaneously stopping yourself with your leading leg. We call it “driving with the brakes on” and it’s not only an inefficient way to move down the road, but it can create long-term impact damage to your feet, knees, hips and lower back.

According to the Joint Implant and Surgery Foundation there are over 200,000 hip replacements performed in the U.S. every year! I was totally shocked at this number. Here’s a small section of an article on hip replacements that I’ve borrowed from the JISF.org website:

“Hip joint load is a function of body weight, activity level, muscular force, and the distance from the body’s center of gravity to the center of the femoral head. Publications have stated that the hip joint force increases up to 2.5 times body weight with speed in level walking.”

Let’s see… two and a half times my body weight is 290 lbs. That means that when I walk at any kind of speed on a level surface there’s a force of 290 lbs. going to each of my hip joints with every step I take. Now, if I’m reaching forward with my stride and locking my knee, that means that that same amount of force is also going into my heels (plantar fasciitis & ankle problems), my knees (300,000 total knee replacements each year according to the NIH), my hips (you’ve seen the numbers), and lower back (The U.S. spends $50 billion each year on lower back pain). You’d think that here in the 21st century we could come up with a way to prevent some of this. Well, there is something remarkably simple that you can do the next time you find yourself walking somewhere. Are you ready for this earth-shattering piece of inside information? OK, here it is….

Don’t lock your knees when you take a step forward. That’s right. It’s pretty simple. Just make sure your knees are always bent as your foot comes down onto the ground ahead of you. Here’s how you’ll be helping your hip joint specifically. When you lock your knee the impact of your footstrike travels in a direct line from your heel to your hip because all of your bones are lined up in a straight line. On the other hand, if you bend your knees, that impact is dispersed through your feet, ankles, and knees before it reaches your hip…and the resulting impact to your hip becomes almost negligible.

Of course, if you’re used to walking with your knees locked, this means a change in what is probably a longstanding habit. Remembering to do it is the hardest part, but it is much easier to do if you can remember to always work on walking with your posture well-aligned with your shoulders and head slightly forward of where you are used to carrying them. It’s just a very slight forward tilt of your upper body whenever you’re walking.

Another way to accomplish the knee bend when you walk is to shorten your stride and quicken your cadence. You’ll sense that you’re taking smaller, quicker steps, but your legs will feel very different as will the impact on your hips and knees. It might feel a bit strange at first, but if you go back and read the statistics about knee and hip replacements and think of the alternatives…you might be more willing to watch your step.

For more information on injury-free walking and fitness walking please visit the ChiWalking website.

There seems to be much debate in the running community today on what is the best footstrike for running. Runners of all levels divide themselves into three basic camps: the midfoot strikers, the forefoot strikers and the heel strikers. So, here is my attempt to put forward my best understanding of the three basic types of foot strike and what each one does for a runner.

The Midfoot Strike
The midfoot strike is characterized as having your heel and the ball of your foot touching the ground simultaneously with each foot strike. You can see this very clearly when you watch young children run. They always land with their whole foot on the ground. I would say that at least 95% of all people run this way as kids.

In the ChiRunning technique, we promote the midfoot strike because it is, for most runners, the most injury-preventive way to run. Our emphasis is on preventing the lower legs (including the knees) from over-working, because this area of the body is where, conservatively speaking, 90% of all running injuries occur. Plantar fasciitis, achilles tendonitis, shin splints, calf pulls, knee pain, IT band problems, over-pronation, bunions, metatarsal and tibial stress fractures, and hammer toes lead the list of the most common running injuries. This list is immense compared to everything that can go wrong above the knees.

The propulsion in ChiRunning comes from allowing your body to fall forward with the pull of gravity, not from pushing yourself forward with your feet and legs. For this reason it is more energy-efficient because your legs are not required for propulsion. When your feet come down onto the ground, they land either under or slightly behind your center of mass, in a midfoot strike. The only work required of your legs is to provide momentary support for your body between strides. Landing on your midfoot, in most cases, either reduces or eliminates the work done by A.) the lower leg muscles…especially the shins and calves, and B.) the two tendons that are most commonly injured… the plantar tendon and the achilles tendon.

The ChiRunning technique is primarily focused on energy efficiency and injury-prevention with speed being a secondary focus.

The Forefoot Strike
The forefoot is basically the part of the foot between the forward-most part of the arch and the end of the toes… generally speaking, the balls of the feet. If your heels don’t touch the ground when you run, you’re a forefoot striker.

Sprinters, middle-distance runners, and some triathletes tend to prefer running on the forefoot because of the extra speed obtained by “paw-back” and “toeing off.” This way of running is great if you want lots of speed, but it puts the responsibility for most of the body’s propulsion squarely onto the legs…especially the lower legs. Some of the faster elite middle-distance runners (i.e. Kenyans, Moroccans, Ethiopians, Mexicans) run with a forward lean added in combination with a forefoot strike. This takes some but not all of the burden off the lower legs.

Because forefoot running is primarily used for running at faster speeds, energy efficiency tends to take a distant back seat. As far as being injury-preventive, forefoot striking helps prevent knee injuries because it lowers the impact to the knees. This is a good thing. But the problem with it is that running on the balls of your feet increases the workload on your calves, shins, achilles tendons, and plantar tendons, so you risk either overworking a muscle or pulling a tendon if you go too far or too fast while running on your forefeet.

The Heel Strike
Heel striking is when your heel strikes the ground in front of your body. At least 75% of all runners run with a heel strike. The interesting thing about this fact is that, although it is by far the most common of all the footstrike patterns, it is not done by choice, but by default. The vast majority of all runners are not elite runners or competitors, they’re just regular folks like you and me, who like to run and like to stay fit.

Most recreational runners tend to run with their body in an upright position… with no lean at all. This forces them to have to reach forward with their legs when they run…and when you run upright and reach with your legs, your feet will always land in front of your body and your heels will come down first. When you run this way, you’re basically putting on the brakes with each stride, which sends a lot of impact to your lower legs and knees. For this reason, many heel strikers complain of knee pain at some point in their running career. This is the group that keeps orthopedists and physical therapists in business.

But, just because you might be a heel striker, it doesn’t mean you’re doomed to be a heel striker for the rest of your life. Work on improving your running technique. If you can learn to run safely and efficiently, you’ll be eliminating the causes of running injuries and you won’t have to worry about ending up in a doctor’s office getting fixed.

The midfoot strike works for most runners…the forefoot strike works for some runners…but, the heel strike doesn’t seem to work well for anybody. Try all three and see which one works the best for you.

With the ChiRunning book, DVD or audio CD you can easily learn the midfoot strike. We offer you an alternative way to approach your running so that you can learn the midfoot strike and spend many more years enjoying one of the world’s best and most natural sports.

Happy trails,

Danny