Stand shoulder-width apart, lower into a squat, keeping weight on heels, then return to standing.
Step forward with one foot, bend both knees to 90 degrees, push back to standing, repeat on other leg.
Start in plank position, lower body by bending arms, push back up to plank.
Squat down, place hands on floor, jump feet back into plank, jump feet forward, jump up with arms overhead.
Run in place, bringing knees up towards chest while pumping arms.
Start in plank position, alternate bringing knees towards chest quickly.
Start with feet together, jump feet out wide while raising arms overhead, return to starting position.
Start in plank position, tap left hand to right shoulder, then right hand to left shoulder, alternate.