To protect your knees, you must do exercises for your hamstrings and your quadriceps. One exercise that can help you build these muscles are leg curls. Max Test Xtreme Take on any exercises you don't like head on. Many people avoid the exercises that are hardest for them. So add those dreaded exercises to your daily routine and do them regularly. Max Test Xtreme When working with weight machines, go in order from smallest to largest. Because these small muscles tire before the large ones, it is logical to work with dumbbells, barbells and other small weights before moving on to the larger machines.

http://www.supplementstry.com/max-test-xtreme/