Engage Your Abs. Before each move in our workout, first engage your abdominals by tightening them -- without holding your breath -- as if preparing to take a punch. You'll activate the core muscles surrounding your spine and tone your entire abdominal area. Engaged abs also help prevent injury when lifting. If you have a medical condition, be sure to check with your doctor before this or any new fitness program.

Leg Swings. Stand on your right leg and raise the left leg 3-6 inches off the floor. With arms at your sides, swing your left leg forward and backward, touching the floor for balance, while keeping your torso erect. Now, repeat the moves, but don't allow your foot to touch the ground. And finally, swing your left foot to the left side, holding your right arm out. Switch legs and repeat.

One-legged Clock With Arms. Balance on one leg, torso straight, head up, and hands on the hips. Visualize a clock and point your arm straight overhead to 12, then to the side (3), and then circle low and around to 9 o'clock without losing your balance. Increase the challenge by having a partner call out the different times to you. Switch to the opposite arm and leg and repeat.

Lunge With Reach. Stand with feet together, arms straight out to the side at shoulder height. Now, lift one foot up, pause momentarily, and lunge forward. Your hips should drop down until your front thigh is parallel to the floor. Maintain a flat back and hold your arms straight in front of you. Push off with your front leg to return to starting position. Repeat on the other side.

Single-Leg Dead Lift. Balance on your left foot, engage the abs, and bend forward at the hips while reaching toward the ground with your right hand. Hold on to a 5- to 10-pound weight and raise your right leg behind you for counterbalance. Tighten the buttocks as you return to the starting position. Keep your knee relaxed and back flat throughout the movement. Switch legs.