Stand tall with feet hip-width apart, holding a dumbbell in each hand with arms at sides, palms facing backward. Keeping arms straight, push dumbbells behind you, squeezing through triceps. Slowly reverse movement back to starting position.
Stand behind chair with feet hip-width apart, holding a dumbbell in right hand. Lean forward and place left forearm on back of chair. Bend right arm 90 degrees and bring right elbow to shoulder height. This is starting position. Keeping upper arm steady, straighten right arm, squeezing triceps. Slowly reverse movement back to starting position. Alternate arms with each circuit.