One-Hand Dumbbell Drill

This drill strengthens your wrist, which means your punches will be stronger. Lee used this exercise
to enhance his one-inch punch, Wong notes.
"When your wrist is strong, you get more power," he says. "And it’s good when you’re in close
range because there isn’t much room for your wrist to travel. This is a good drill for the one-inch
punch."
To begin, stand with your feet about shoulder-width apart, and hold a five-pound dumbbell in your
right hand. Keeping your arm to your side and using only your wrist, raise the dumbbell as high as
you can and lower it as far as you can.
Do two sets of 25 reps. When you’re done, do two sets of 25 reps, moving your wrist from side to
side as far as you can.