Stand with feet just wider than hip-width apart. Lower into a squat position, then drive through your heels to return to standing.
Place your hands on the ground, keep your body straight, and lower yourself until your chest almost touches the floor. Then push back up.
Lie face down, then raise yourself on your elbows and toes. Keep your body straight and hold the position.
Step forward with one leg, lower your hips to drop your knee towards the ground, then push back up.
Start in a push-up position and alternate bringing your knees to your chest in a running motion.
Sit on the edge of a chair or bench, place your hands next to your hips, and lower your body by bending your elbows.