1. The first technique is by far the newest out of all the techniques and that is the squat curl.
Explanation Exercise Video...
A squat curl is more for power than size, but at the very least increasing your strength will allow you to build more mass later on. Start with a normal stance feet shoulder with apart and dumbbells parallel to your body then squat down till the dumbbells touch the ground, then spring back up and curl at the same time. You can go very heavy on this exercise and you should in order to really overload your biceps.2. The always famous incline curls.
Exercise Video...
I started doing this a long time ago because of how well they insulate the biceps and really force a great contraction. When starting out, use less of an angle and light weight and work your way up to your normal weight. This exercise you would do at the end of a workout due to the incredible pump it gives you.3. 21's! Yes the old favorite of 7,7,7 should be used every once in a while to really blast your biceps for major growth. The first 7 reps should be with heavy weight, the second set with light weight, and the final set with very little weight. This is a great mid workout exercise because of the cardio benefits that come along with all the reps.
Explanation FST7 programme Video...