Take a dumbbell in each hand and raise them to shoulder height, keeping them in a vertical position. Your palms can face towards you or forward.
If you prefer, you can hold the dumbbells in a 'rack' position, with your elbows elevated and the dumbbells resting on the top of your shoulders.
Keep your torso upright and your abdomen engaged.
Lower your body by bending your knees and hips, as if you were going to sit in a chair. Make sure your knees follow the direction of your toes.
Descend until your thighs are at least parallel to the ground or lower, depending on your flexibility and ability. From the lowest position, push through your heels to stand up, extending your legs and returning to the starting position.
Keep your abdomen engaged and your torso upright throughout the movement.