Triceps Is Key

If You want massive and muscular arms, you cannot afford to overlook the triceps. The triceps muscle comprises approximately 66 percent of the upper arm. The biceps muscles only make upabout one-third of the size of the upper arm yet that is where mostpeople spend all their arm-training effort. When flexed and contracted, the triceps forms a large horseshoe shape on the back of the upper arm. The triceps muscles also make the biceps look better because they add awesome size to the underside of the arm and give shape to the arm from both the top and bottom.