1
Stand upright with feet shoulder-width apart, arms extended downward at your sides holding a barbell with an underhand (supinated) grip, palms facing forward. Keep your chest up and core engaged throughout the movement.
2
Position hands slightly wider than shoulder-width apart on the barbell with palms facing away from your body. Ensure a firm grip and maintain a neutral spine with shoulders retracted slightly.
3
Slowly lower the barbell by extending your elbows, allowing your forearms to straighten completely while keeping upper arms stationary and close to your torso. Control the descent over 2-3 seconds without using momentum.
4
Curl the barbell upward by flexing at the elbows, driving your hands toward your shoulders while maintaining upper arm position against your sides. Squeeze biceps at the top, then return to starting position with controlled movement.