Hold a single dumbbell in both hands and raise it above your chest.
How-to: Lie faceup with feet on the floor. Hold a single dumbbell in both hands and raise it above your chest. Slowly extend the dumbbell overhead while slightly bending your elbows, then bring it back to the starting position. Be sure to start this one with a low enough weight that you can manage it comfortably. Don’t risk dropping the dumbbell on your chest or head!