This Upper-Body Workout Is All You Need to Build Strong Arms and Shoulders

This upper-body workout move primarily targets the deltoids (aka shoulder muscles) but also recruits parts of the upper back and triceps. To make the most of this one, engage your core while doing it; try not to arch your back or let your ribs poke forward.

How to Do an Overhead Shoulder Press:

• Hold a dumbbell in each hand racked just above your shoulders, palms facing in. This is the starting position.
• Straighten your arms to press the dumbbells overhead, stacking your wrists directly over your shoulders. Try not to let your shoulders shrug up toward your ears.
• Bend your elbows, lowering the weights to the starting position. That's one rep.
• Do three sets of 12 reps, alternating with Exercise 2.