Holding five-pound dumbbells, stand with your feet together and knees slightly bent. Lean forward, moving your chest over your toes. (Keep your abdominals pulled in to support your arms.) Begin with your arms straight, weights directly beneath your shoulders. Be sure not to bend too far forward so you won’t strain your back. Bend your elbows out to a 90-degree angle, bringing them up to shoulder height, until your upper arms are parallel to the ground. Your wrists should be directly under your elbows. Hold for two seconds.