Upper body strength is expressed mostly through the strength in the arms and the muscles on the back. So P90X Back & Biceps is a classic workout for everyone who wants some body definition.
P90X Back & Biceps workout is a classic split routine that never go out of style. Pretty much like P90X fitness program. Why?
Because they will get your results every single time you perform them. Tony Horton, the creator of P90X says that it would be impossible to avoid the burn, so don’t expect easy results. You’re working two body parts in one direction, so it has to be hard at first. The secret is to stick to the routine and to not give up.