Side Lunges: Begin with feet hip distance apart, and take a big step to the left. Bend your left knee toward your foot, but do not let your knee extend over your toe. Lift your left foot, and stand back in your starting position. Do the same with your right foot.
Sumo Squats: Stand with feet slightly wider than hip distance apart. Bend knees, keeping your back straight, chest up, and butt out, until you feel a stretch in your hips. Do not let your knees extend over your toes. Return to starting position.
Plank Jacks: Begin in plank position on hands and toes, keeping your back straight. Jump your feet apart, as if you were doing the bottom half of a jumping jack, then jump them back together.
Inchworm Pushups: Start in yoga's downward dog position. Walk your hands forward until you are in a plan; do one push up. Walk your hands back until you are in downward dog, and stand up!
Supermen: Lie on your stomach with your arms and legs extended. Lift up your arms and legs as high as you can, keeping only your torso on the floor. Return them to the ground.
Reverse Crunches: Lie on your back, with legs straight up in the air. Lift your legs and butt, keeping your head and upper back on the floor. Drop your butt back down to the floor and repeat, taking care not to make jerky movements, but using your abdominal muscles to lift your hips.
Flutterkicks: On your back with your legs extended, lift your legs up and down in tiny, alternating kicks. Keep your back flat on the ground.
Lunge + Twists: Stand with feet hip distance apart. Take a big step forward with your left leg and bend your knee, making sure your knee does not extend over your toe. Keeping your back straight, core strong, and chest up, twist to face each side. Be sure to only twist at the middle, not moving your hips. Step your left leg back to starting position, and repeat with your right leg.
Squat Calf Raises: Squat down with your weight on your heels, back straight, and chest up. Swing your arms back while you squat, as if you were getting ready to broad jump. Swing your arms forward until your reaching for the sky, stand up all the way to your tippy toes.