Slide show: Weight training exercises
Photo of woman doing pushup
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Weight training includes exercises that use your own body weight for resistance. The pushup, for example, strengthens the pectoral muscles in the front of your chest and the triceps muscles in the back of your upper arms.

Position yourself on your hands and feet with your eyes facing the floor. Place your hands slightly greater than shoulder-width apart and your feet comfortably apart. Slowly bend your elbows and lower your chest until your chin reaches the ground. You'll feel tension in the muscles in your back, your abdomen and your upper arms. Then slowly return to the starting position. Repeat.

When you're doing pushups, be careful not to let your back sag down or arch up. Keep your movements smooth and controlled.

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