Set-up: With two dumbbells set your feet to roughly shoulder width. Brace your core with a neutral spine, and grasp the dumbbells using an overhand, shoulder-width grip.
Lift: Bracing through your core, push the weight in your left hand overhead, just shy of locking your elbow at the top. Return the weight under control, and lift the other side.
Emphasis: Keep your core and back strong while maintaining natural spine position. While your legs, core and back should work to stabilize the movement, do not drive through the legs or use momentum to complete the lift.
Repetitions: When both arms have been raised, this counts as one repetition.
Training Impact
Muscle Roles in overhead presses - dumbbells, alternating arms
Instructions and effects for the Overhead Presses - Dumbbells, Alternating Arms exercise 
