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Change Your (Workout) Surface, Change Your Body

To fast-track your results, switch up the ground beneath your feet.

There’s a reason footwear companies spend millions on technologies perfected to traverse different kinds of terrain: Optimize the way in which your body responds to a specific surface and you’ll boost performance. Better yet, choose the right surface for a certain workout, and you’ll fine-tune your results.

Here, how the ground beneath you impacts your fitness routine — and how to best spend your time on each.