The overhead press works your core (trunk) muscles, as well as shoulders, upper chest, and arms. To do an overhead press, you’ll need a bench and a barbell with enough weight to enable you to do 8 to 12 repetitions.

Sit on the bench with your feet flat on the floor. Hold the barbell at chest level with your palms facing away from you, hands slightly wider than shoulder distance apart. Push the bar overhead until your elbows are straight. Lower the bar until it touches your chest. Do 8 to 12 reps.