Kneel down with your right leg bent in front of you at a 90-degree angle. Hold a dumbbell in your left hand in front of your shoulder (a). Keeping your core and glutes tight, press the weight directly overhead until your arm is fully extended (b). Use your back and shoulders to slowly lower the weight back down to start. That's one rep. Do 10, then repeat on the other side.

Quick Tip: Your arm should be close to your ear when it's fully extended.

Stand with your right leg in front of you and your left leg behind, and hold a dumbbell vertically in front of your chest with both hands (a). Engage your abs to keep your balance as you slowly lower your left knee toward the floor, bending your right knee to a 90-degree angle (b). Rise back to the starting position. Do 10, then repeat on the other side.