Behind The Knees Cable Kickbacks... this is a great variation of the kickback that actually has some decent growth potential to it for the triceps (much better than free weight kickbacks). 1. The cable gives you effective tension through a much greater range of motion than a free weight kickback (which is only good at the top). 2. Because you're using two arms (which also makes the cable more stable), you're able to use more overall weight than a single arm cable kickback. Set up a straight or c