How to do it
First, select your dumbbells. Don’t go overboard on the weight here, because this is an exercise that suddenly feels very tough halfway through a set. You almost want to feel like you’ve picked too light a weight for the first couple of reps. Opting for too heavy a weight can also mean you risk injury to your shoulders if your form gets sloppy as a result of the load.
Hold the dumbbells by your shoulders with your palms facing forwards and your elbows out to the sides and bent at a 90° angle. Without leaning back, extend through your elbows to press the weights above your head. Then slowly return to the starting position.