Both are fine, says Heiderscheit, as long as recent converts do not make the switch too abruptly.
Speaking from personal experience, Heiderscheit says, air max sale is easy to get injured if you decide to toss your cushiony sneakers and immediately start racking up miles in a pair of barely-theres.
It can take months to adapt, he says. He recommends exercises to strengthen muscles in the calf and foot and using the minimalist shoes for short, easy runs at first.
"You should feel so comfortable in a shoe that you could sleep in them," says Jon Woo, a cheap air max 1 medicine specialist at the University of Washington in Seattle.
Experts say that just as everyone's feet are unique, so are their running styles. "There is no absolute biomechanical ideal," says Heiderscheit.
One of the world's fastest marathoners, Pescah Jeptoo, has a knock-kneed gait that has carried her through 26.2 miles in a blazing two hours, 20 minutes, and 14 seconds.
Still, Heiderscheit says, there are "flaws" to avoid.
"You don't want to bounce too much. You don't want to overstride. And the one thing we absolutely don't want people to do is a hard heel strike — truly coming down on your run air max with your foot pointed high in air."
Jeptoo, for the record, runs in Nike Zoom Streak 3s, a lightweight, breathable shoe with some support and cushioning. Online reviews of the shoe range from "I got huge blisters" to "Perfect!"
If this proves anything, experts says, it is that the one true authority on which shoes are air max 90 uk is the runner who wears them.