1
Sit on an adjustable weight bench inclined at 45 degrees with back firmly against the backrest. Plant feet flat on the floor. Hold dumbbells in each hand with arms extended downward at sides, palms facing forward in a supinated position.
2
Secure your upper arms against the bench to eliminate momentum. Ensure core is engaged and lower back maintains contact with the backrest. Establish a neutral grip with dumbbells held at shoulder width.
3
Lower the dumbbells in a controlled manner by extending the elbows, allowing the weight to travel downward in an arc. Maintain constant tension on the biceps throughout the descent. Stop just before full elbow extension to keep tension on the muscle.
4
Curl the dumbbells upward by flexing the elbows, driving the weights toward shoulder height. Squeeze the biceps at the top of the movement. Return to the starting position in a controlled manner without fully locking out the elbows.