SETUP: Load a dumbbell in each hand and keep them down by each leg. Sit up straight, pinning your shoulders back with your chest puffed out (like Superman).
LIFT: Focus on raising your elbows out to the side, until they’re level with shoulders. Lower the dumbbells back to the start position under control.
TIP: Lots of people claim you should turn your hands at the top of the rep (as if pouring a glass) for better shoulder activation. This is BS! Doing that creates internal rotation which leads to impingement. At the top of each rep your hands should either be flat or thumbs up.