Gain bicep mass by Incline Dumbbell Curls

This exercise is similar to the standing dumbbell curl. It works the biceps and forearms.

Grab a pair of dumbbells. Sit back on an incline bench with your feet shoulder width apart. Let the dumbbells hang at arms length on each side of the bench behind your body. This exercise isolates and stretches the biceps more then standing dumbbell curls so you will have to use less weight.
Moving only your forearms, use your bicep strength to curl the dumbbells up to shoulder level. Hold this position for a second to maximize the peak contraction in the biceps. Slowly lower the dumbbells to the starting position. Hold this position for a second to really stretch the biceps. Repeat.

Tips - do not lift excess weight and use momentum to swing the dumbbells up. Use a lighter weight and keep the movement slow and controlled. For variety you can do this exercise with one arm at a time.