How to Run Properly? What the Studies Show
Most form advice is louder than the science behind it. Here is what studies on feet, steps and arms actually found.
Running properly mostly means running relaxed, with slightly shorter steps. Your body sorts out much of the rest by itself.
At the University of Colorado, researchers had runners jog with their hands on their heads, then arms crossed, then hands behind their back. Every version cost more energy than just letting the arms swing.
Your arms balance your legs. Your body already knows a lot, and most form advice forgets that.
How do you run properly?
Run tall and loose. Let your arms swing. Take short, quick steps so your foot lands under you, and land quietly. Leave your foot strike alone.
Heel striking is not a crime
At an elite half marathon in Sapporo, Japan, researchers filmed runners at the 15 km mark. 74.9% landed on their heel. Only 1.4% landed on the forefoot.
A 2020 review in Sports Medicine found that heel strikers were no less efficient. Runners who switched to the forefoot got less efficient, and the stress moved from the knee to the calf and ankle. It's a trade, not an upgrade.
And you probably don't know how you land anyway. In a 2024 study of 710 runners filmed on a treadmill, only 42.7% guessed their own foot strike right.
Shorter, quicker steps
At the University of Wisconsin, 45 runners ran at their normal step rate, then 5% and 10% faster, at the same speed. With 5% more steps a minute, the knee took less load on each landing. A follow-up found 10% more steps cut the force behind the kneecap by 14%.
Small is the point. The authors warned that big jumps are hard to keep up.
Land softly
In Hong Kong, 320 new runners who hit the ground hard were split in two. Half spent 2 weeks on a treadmill with a screen showing how hard each landing was, and learned to land softer. A year later, far fewer of them were injured.
That was lab equipment, and only hard landers took part. But you don't need a screen to hear your feet slap the ground.
Practice helps too. In a 2012 study, ten beginners got 8.4% more efficient in 10 weeks with no form coaching at all. It's one more reason your first runs should feel almost too easy.
What the studies can't tell you
Most of these are lab studies of load, not injuries. Only the Hong Kong trial counted injuries, and it is one trial. If something already hurts, see a physio.
What to do
1. Let your arms swing
Bent elbows, loose hands.
2. Add about 5% more steps
Count your steps for 30 seconds, double it, then add a few. Same easy pace, smaller steps.
3. Land quietly, under you
If you hear every step, or your foot lands far ahead of your knee, shorten your stride.
4. Keep showing up
A few weeks of easy runs will do more for your form than any checklist.
Is it bad to run on your heels?
Not by itself. Most elite runners in the Sapporo study did. Landing far in front of your body is the problem, with any foot strike.
Should I run on my toes?
Not on purpose. It made runners less efficient at first and loaded the calf and ankle more.
Where to start
Molorun gives you short, easy runs with walk breaks, so you get the practice your form needs without overdoing it.
Scientific Sources
- Arellano CJ, Kram R (2014), Journal of Experimental Biology. The metabolic cost of human running: is swinging the arms worth it?
- Hasegawa H, Yamauchi T, Kraemer WJ (2007), Journal of Strength and Conditioning Research. Foot strike patterns of runners at the 15-km point during an elite-level half marathon.
- Anderson LM et al. (2020), Sports Medicine. What are the benefits and risks associated with changing foot strike pattern during running? A systematic review and meta-analysis of injury, running economy, and biomechanics.
- Vincent et al. (2024), Frontiers in Sports and Active Living. Accuracy of self-reported foot strike pattern detection among endurance runners.
- Heiderscheit BC et al. (2011), Medicine & Science in Sports & Exercise. Effects of step rate manipulation on joint mechanics during running.
- Lenhart RL et al. (2014), Medicine & Science in Sports & Exercise. Increasing running step rate reduces patellofemoral joint forces.
- Chan ZYS et al. (2018), American Journal of Sports Medicine. Gait retraining for the reduction of injury occurrence in novice distance runners: 1-year follow-up of a randomized controlled trial.
- Moore IS, Jones AM, Dixon SJ (2012), Medicine & Science in Sports & Exercise. Mechanisms for improved running economy in beginner runners.
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