Peter Attia· MD
walk up and down stairs with feet pointed perfectly forward so if your feet are pointed perfectly forward as you're walking up and down flights of stairs it means you still have the ankle Mobility to do that
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
walk up and down stairs with feet pointed perfectly forward so if your feet are pointed perfectly forward as you're walking up and down flights of stairs it means you still have the ankle Mobility to do that
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if you can't walk down a flight of normal height stairs so call it a seven or8 inch step whatever normal is and keep your toes perfectly pointed forward you don't have enough dorsy flexion
if that's difficult on your uh lower shin and upper foot you probably don't have enough dorsy flexion