The 30-Minute Workout

 Holding 3- to 5-pound weights, stand with feet slightly wider than hip-width apart. Pull your abs in, draw your shoulders back and down, arms at your sides. Bend your knees and lower into a squat, sitting back on your hips and keeping knees behind toes [A]. Straighten your knees to starting position and press your arms overhead [B]. Repeat 10–15 times.

Benefits: Improves balance, upper-body strength and stamina.