This total-body exercise will get your heart pounding without the impact of a typical burpee.
Stand with the balls of your feet on paper plates. Push your hips back, bend your knees, and lower into a squat. Place your hands on the floor. Slide your feet out to a plank position. Quickly bend your knees and slide your feet back into your hands. Return to standing. That's one rep. Do 15 reps total.
Tip: Keep your feet pressed into the plates the entire time to keep them from slipping.