At the top of the minute you're going to run perform a single movement for 45 seconds, rest 15 seconds, then move on to the next movement.

With overhead squats, grab a stick or towel. Constantly press up into the stick, so your shoulders always feel like they're working. Squat down to the bottom of a squat or a target like a chair.

For the walkouts, keep your legs as straight as possible as you walk your hands out to the top of a push-up position. For a challenge, do a push-up, then walk your hands back, again keeping your legs as straight as possible.

Modify step back lunges and jumping jacks if knee impact is too much by slowing the movement down