1
Stand upright with feet shoulder-width apart, facing the barbell. Grasp the barbell with an underhand grip (palms facing forward), hands slightly wider than shoulder-width apart. Keep arms fully extended at your sides with the barbell resting at thigh level.
2
Engage your core and maintain a neutral spine against the wall or in front of it. Position your elbows close to your torso and ensure your shoulders are back and relaxed. The barbell should be held firmly with wrists in neutral position.
3
Lower the barbell in a controlled manner by extending your elbows, allowing the weight to descend toward your thighs. Maintain tension in the biceps throughout the lowering phase and keep elbows fixed at your sides without allowing them to drift forward or backward.
4
Curl the barbell upward by flexing your elbows, driving the bar toward your shoulders. Focus on squeezing the biceps at the top of the movement. Control the lift and avoid using momentum or swinging the weight. Return to the starting position with a brief pause at full extension.