As a former Golden Gloves-contending boxer, owner of High Performance Gym in South Carolina, Clay Burwell, knows a thing or two about training arms. When it comes to building big biceps, you canโ€™t really stray from doing some sort of curl, but that doesnโ€™t mean you canโ€™t vary your workouts with any number of curling offshoots. In this Burwell-designed routine, two bodybuilding staples (incline dumbbell curls and cable curls) are grouped with TRX curls, where you lift your bodyweight up using only your biceps.

This combination of free-weight training, the constant tension provided by cables, and a gymnastics-like strength move will provide a spark to help bring up even the most stubborn of biceps peaks. And because no good pair of arms is complete without adequate forearm and grip strength, Burwell threw in a grueling farmerโ€™s walk with four dangling kettlebells. Expect some next-day arm soreness after this one.