Stand with your feet slightly wider than shoulder-width apart. Keeping your back straight and your arms spread wide, bend forward at the waist until your torso is parallel to the floor. Return to the standing position. You should feel this exercise in your lower back and hamstrings.

To begin, lie face down with your hands shoulder-width apart, palms flat on the floor, and your body in a straight line. With your weight supported by your arms and the balls of your feet, raise your body by straightening your arms. Keep your body in a straight line; do not bend at the waist. Keeping your body straight, lower yourself until your waist touches the floor. If full push-ups are too challenging for you, try modified push-ups. These are like regular push-ups except that you lie face down with your knees bent and support your weight using your arms and knees, rather than your arms and feet.

Stand with your arms at your sides and your palms facing your legs. Raise your arms straight out to the sides until they are parallel to the floor. Slowly return to the starting position. This exercise can be done with or without weights.

Stand in a comfortable position with your arms at your sides, palms facing forward. Keeping your upper arm straight and close to your body, bend at the elbow until your elbow points directly downward. This exercise can be done with or without weights. However, it is important to remember that the biceps are small muscles, and it is easy to overexert or overuse them.

Lie on your back with your knees bent and your feet flat on the floor. Place your fingertips on the side of your head just behind your ears. Push your lower back into the floor, flattening the arch, and hold. Curl up slowly so both of your shoulders lift off the floor a few inches. Hold for a count of two and return to the start position. Tip: Keep your head up; do not tuck your chin to your chest.

Lie on your stomach with your arms and legs stretched out. Raise your arms and legs off the floor a few inches (a position that looks a little like Superman flying). Hold this position a few seconds, then lower your arms and legs. Repeat.