Barbell Curl
BarbellStrength
The Barbell Curl is a foundational strength exercise that involves standing with a barbell gripped at shoulder width, curling it upward to chest level by flexing the elbows, then lowering it controllably. Its primary purpose is to build biceps strength and size while improving elbow flexion power. It mainly targets the biceps brachii, with secondary engagement of the forearms and brachialis, and requires only a barbell, making it ideal for beginners to advanced lifters seeking arm hypertrophy and functional upper-body strength.
How to Perform Barbell Curl
- 1To perform the barbell curl safely and effectively, stand tall with your feet shoulder-width apart and knees slightly bent for stability. Grip the barbell with an underhand grip, hands just outside shoulder-width, palms facing forward, and let the bar rest against your thighs with arms fully extended and elbows tucked close to your sides. Engage your core by bracing your abs and keep your shoulders pulled back and down, chest up, and gaze forward.
- 2Initiate the movement by exhaling as you flex your elbows to curl the barbell upward in a controlled arc toward your shoulders, keeping your elbows pinned to your sides and avoiding any swinging or momentum from your hips or back—squeeze your biceps hard at the top where your forearms nearly touch your biceps. Pause briefly for peak contraction, then inhale as you slowly lower the bar back to the starting position, resisting the weight fully through the eccentric phase until your arms are straight but not locked.
- 3Key form cues include maintaining a straight spine with no forward lean, moving only at the elbows while keeping wrists neutral and upper arms stationary, and using a full range of motion without shortening the rep. Common mistakes to avoid are swinging the torso for momentum, which strains the lower back; flaring elbows outward, reducing biceps isolation; and rushing the lowering phase, which limits muscle growth and risks injury. Aim for smooth, deliberate reps to maximize biceps strength.