5) Incline dumbbell curls

This exercise is a very versatile one, depending on subtle changes one makes during its execution it can benefit the whole of the bicep, stretch it, build its peak and work the inside portion of it.
Our subject sits down on the incline-bench, a dumbbell in each hand. He/she lifts them up to shoulder level in an arc-like motion till they reach shoulder-level, then lowers them back to starting position.
If the lifts are done to the front it’s basically a full-bicep exercise, if it’s done to the sides it’s going to work the inner portion of the biceps.
Extra considerations: - the upper arms should remain parallel to the incline bench and NOT perpendicular to the floor.