Dumbbell Bicep Curl with Overhead Extension on Stability Ball

Instructions

1. Sit on a stability ball holding a dumbbell in each hand, feet flat on the floor.
2. Curl both dumbbells up to shoulder height, then press them overhead.
3. Lower the dumbbells behind your head into a tricep extension, keeping elbows close.
4. Press back overhead, then curl back down to the starting position.
5. Repeat for the target number of reps, maintaining balance on the ball.