We're you're pumped with Pure Muscle Pro you always want to go heavy and hard. But you have to be careful and not injure your self. Men's Health Magazine published an article just talking about this. Here's some helpful hints to prevent injury.

    "Eliminate overhead work from your routine and strengthen your rotator cuffs with W raises: Grab a light dumbbell in each hand and lie facedown on an incline bench. Bend your elbows slightly past 90 degrees and hold your upper arms by your sides, palms facing each other. Squeeze your shoulders and raise your upper arms; your arms should form a W. Lower and repeat. Work your way up to 3 sets of 15 reps, but don't lift to failure."