Stand, squat, hands on ground, jump to plank, push-up, jump to hands, explosive squat jump, arms overhead.
Start in plank, arms straight. Drive knees to chest alternately in a running motion. Engage core, maintain quick pace.
Stand, feet hip-width apart. Lift knees high, pump arms for intensity with each step.
Start feet together, arms at sides. Jump feet out, raise arms overhead. Return and repeat.
Plank position, straight line. Jump feet out, then back, keeping core tight.
Stand, feet hip-width. Lift knees in fast running motion, stay light on feet.
Find sturdy box. Jump on, land both feet, step back down.
Sit, knees bent, feet flat. Lean back, twist torso right, left. Hold weight or medicine ball.