Similar to the traditional overhead shoulder press, this one-arm variation lets you focus on one side at a time. Holmes loves it "because it's multifunctional," she said. "Not only does it increase strength in your shoulders, but it also increases core strength," especially your anterior core (aka the six pack muscles in the front of your body) and your obliques along your sides.
- Start standing with your feet hip-width apart and a dumbbell in each hand, with arms resting at your sides and your palms facing in.
- Brace your core as you lift the dumbbells, placing them just above (but not touching) your shoulders. Your palms should still be facing in. This is your starting position.
- Straighten your right arm to press the weight directly up, keeping your left hand in place. Keep a slight bend in your elbows at the top, ensuring that the weight is directly over your shoulder. Make sure you're pulling your core in tight and keeping your back flat, not allowing it to bend or hunch.
- Bend your right elbow, lowering the dumbbell to come back to the starting position.
- Repeat with your left hand.
- This counts as one rep.
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