Purpose: This movement, more than any other, helps to replicate and strengthen the running movement. You must use your gluteus, quadriceps, and hamstrings in a running-like pattern. This challenges your balance, and by swinging your arms, you can help to improve your core strength during running. Don't try to do this exercise fast until you can control the movement without losing your balance on the way up or down.
How to do it:
* Stand on one leg on a step or stool.
* Lift your opposite leg up as if you were going to step on the next step, and then slowly bring it back down.
* This should replicate the running motion, so you should also incorporate an arm swing with it.
* Repeat 15 times on each leg.