1
Stand with feet shoulder-width apart, knees slightly bent, holding a barbell with an underhand grip (palms facing forward) at arm's length against your thighs. Keep your torso upright and core engaged.
2
Position your hands approximately shoulder-width apart on the bar with elbows tucked close to your sides. Ensure your shoulders are back and chest is open, maintaining a neutral spine throughout the movement.
3
Lower the barbell in a controlled manner by extending your elbows while maintaining upper arm position. The descent should take approximately 2-3 seconds, resisting gravity throughout to maximize time under tension.
4
Curl the barbell upward by flexing your biceps and bending your elbows, driving your hands toward your shoulders. Squeeze at the top position for one second, then return to the starting position in a controlled manner.