SINGLE-LEG SQUAT: Stand about 2 feet in front of a sturdy chair with your back to it. Bend your left leg behind you and place the top of your left foot on the seat of the chair. Bend your right knee until it's parallel to the floor. Don't allow your right knee to jut over your toes. Pause, then rise back to start. Complete a full set, then switch legs.

 

LUNGE: Stand with feet hip-width apart, arms at your sides. Take a giant step forward with your right leg. Bend your right leg (keeping knee from going past toes) so your thigh is parallel to the floor, and dip your left knee toward the floor. Hold, then rise back to start. Complete a set, then switch legs.

 

PUSH-UP: Start on your hands and toes, with your legs extended so that your body forms a straight line from your head to your feet. Your hands should be in line with your shoulders. Bend your elbows and slowly lower your torso toward the floor. Stop when shoulders are in line with your elbows. Then push up.

 

CHAIR DIP: Brace a sturdy chair against a wall. Sit on the edge of the chair and grasp the seat with both hands on either side of your butt. Extend your legs in front of you and inch your butt off the chair, keeping your arms extended and supporting your weight with the heels of your hands. Bend your elbows back, and keeping your body close to the chair, dip down a few inches, or until your shoulders are in line with your elbows. Push yourself back to the starting position.

 

AB CRUNCH: Lie on your back with your feet resting flat on the floor, your knees bent: your hands behind your head, and your elbows out to the sides. Contract your abs and slowly lift your torso off the floor about 30 degrees. Hold for 2 seconds, then lower back to start.

 

BACK EXTENSION: Lie facedown with your elbows out and hands under your chin. Your legs should be extended. Slowly lift your chest a few inches off the floor. Pause, then lower it back to the starting position.