Sit holding one dumbbell with both hands behind your neck by grasping the plate and wrapping your thumbs and pointer fingers around the hand grip.
EXHALE: Extend arms straight above your head, keeping elbows next to ears.
INHALE: Lower the weight back down with contol to the starting position to complete one rep.
Contract abs to avoid arching your back. Use a bench with a short back (if available) for support. Keep elbows tight near ears throughout movement and try to keep your upper arms still.
Muscles Worked: Triceps
Click here to read about selecting the proper amount of weight.