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Step 1
Use isometric exercises that require you to tighten your muscles without moving your joints so you can build muscle without joint stress. In one simple isometric exercise, you sit in a straight-backed chair with your ankles crossed. Your knees can be bent, or your legs can be straight. Push your back leg forward against the front leg. At the same time, push the front leg backward toward the rear leg. Hold this position for 5 to 10 seconds. Switch leg positions and repeat.
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Step 2
Try isotonic exercises that require you to move your joints against resistance. The resistance can come from gravity or a light-weight barbell. In this exercise, gravity provides the resistance. Sit in a chair with both feet flat on the floor. Raise one foot until your leg is straight and hold it in that position for 5 to 10 seconds. Repeat with the other leg.
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Step 3
Take your time during these exercises or any other exercises. By keeping a steady pace, you should be able to talk without running out of breath. Breathe out during the exertion part of the exercise. Inhale during the relaxed part. Stop immediately if you have tightness in your chest or feel short of breath.
