Body weight exercises
The modified pushup is less challenging than a classic pushup. See how it's done.
Strength training includes exercises that use your own body weight for resistance. Pushups, for example, work your chest, arms, shoulders and upper body. Give it a try: 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. Keeping your back and legs straight, slowly bend your elbows and lower your chest until your chin reaches the ground. You'll feel tension in the muscles in your back, abdomen and upper arms. Then slowly return to the starting position.
The step-up is an exercise for the legs and buttocks. See how it's done.
The lunge is an exercise that targets the leg muscles. See how it's done.
The squat is an exercise that targets the leg muscles. See how it's done.
The abdominal crunch is a classic core-strength exercise. See how it's done.