Seniors and invalids recovering from Hyperbolic Stretching Review a long illness are two groups that can really benefit from exercises to improve their overall condition and mobility. Seniors may not realize how much strength, flexibility, and balance they have lost over the years as their activity gradually decreases. It is amazing how muscles atrophy so quickly when people are sedentary for long periods. And most people do not realize the many simple exercises they could do to improve their quality of life.
People who have been seriously injured are usually under the care of a doctor or physical therapist and have an exercise program to help them recover. It is especially important to do exercises correctly and at the right time. Do things too early, incorrectly, or too often and you can cause re-injury; too late or too little and you may have to undergo more therapy to regain proper function and flexibility of the joint.
Muscle groups must work together (the knee bone is connected to the thigh bone) as a system to support the knee and any imbalance in strength or flexibility will cause problems. Knee exercises focus primarily on the large muscle groups in the legs, hips, and buttocks. Don't worry, all the other muscles will be exercised in the process.