Prehab exercises are going to strengthen the most vulnerable areas that get stressed in athletic movement:  your hips, core, and shoulders.  This is your pillar, and strengthening it will improve posture and alignment, allowing your joints to move more efficiently.  It will also build up your most injury-prone areas before you're struck with chronic aches and pain that may, in the worst cases, require surgery.
    Since this is an integrated program, there is a degree of prehab in everything you do.  But the Prehab portion is specifically geared toward strengthening the body to optimize mobility, balance, stability, and joint function and to decrease the potential for injuries while improving performance.
    Moreover, Prehab helps correct problems created by your life off the court.  You probably spend hours hunched over a desk at school.  Inevitably your shoulders roll forward and tighten.  That's bad enough, but now let's say that you come out to play volleyball, and since your shoulders are so tight, they lack the necessary stability and range of motion.  Your body has a knack for compensating, however, and you end up using more of your elbows and lower back when you swing at the ball.  That, combined with poor joint alignment caused by your poor posture at school, could produce a nasty case of elbow pain, rotator cuff issues, and low back pain.
    With Prehab, we are going to strengthen the muscles supporting the upper back and shoulder rotators.  This improves your posture by pulling your shoulder blades back and down.  The shoulder joint's ball and socket will move freely and efficiently, as it was designed to do.  You will feel the difference in every aspect of your game, and life.