Research on the subject is currently limited, but some studies have shown that early rehabilitation following an orthopedic or neurological surgery is not only safe but also results in shorter recovery times. (thek9pt.com)
You'll feel a fuller muscles, a bit shorter recovery times and you should gain muscle mass. (fitnessandpower.com)
They are essential for your optimal performance during training sessions, strong immune system, shorter recovery time after intense workouts etc.. (personaltraining4u.net)