Quad Stacker Deluxe

NHL?hardened New York Rangers center Ryan Hollweg locks your quivering legs in the penalty box and lectures them on strength and balance.

Skater Stride Jump (three sets of eight reps)

1 Balance on one leg holding a 25?pound plate like a really heavy steering wheel. Crouch down.

2 Leap to the other side as far as you can, swinging your jumping leg around in a skating motion.

3 As you land, be careful not to lower the weight or let your upper body fall forward.

Split Squat Jump (five sets of three to eight reps)

1 Get into a lunge position with your back foot up on a bench. Hold two 20?pound dumbbells.

2 Keeping your chest upright and toes in front of your knee, lower your hefty frame straight down.

3 Keeping your chest upright and toes in front of your knee, lower your hefty frame straight down.

Squat Jump (five sets of three to eight reps)

1 Stand on a flat surface with your back straight. Hold two 20?pound dumbbells at your sides.

2 Drop into a half?squat position, keeping your eyes straight ahead as you lower your body.

3 Explode upward as high as possible, land, regain your balance, and start all over again.