1
Stand upright with feet shoulder-width apart, holding a barbell with an underhand (supinated) grip at arm's length in front of your thighs. Keep your back straight and core engaged.
2
Position your hands slightly wider than shoulder-width apart on the barbell with palms facing forward. Keep your elbows close to your torso and shoulders back.
3
Lower the barbell in a controlled manner by extending your elbows, allowing the weight to descend toward your thighs while maintaining a slight bend in your knees and keeping your upper arms stationary.
4
Drive through your heels and curl the barbell upward by flexing your elbows, bringing the weight to approximately chest height. Squeeze your biceps at the top, then return to the starting position with control.