Muscular Development was an American fitness and bodybuilding magazine first published in 1964.
[2] Muscular Development focused on bodybuilding and nutrition science.
Among its contributors were Anssi H. Manninen (former Senior Science Editor), Michael Colgan, John Romano (former Senior Editor), Dan Duchaine, and Mike Mentzer.
It was notable for including an ongoing comic strip, Max Rep: Mr. Astrotitan 2206 by illustrator Lyman Dally in the 1990s.
Max Rep was featured on the January 1991 cover with Sandy Riddell while both he and Quadra Blu appeared together on the fully illustrated November 1993 cover with Quadra appearing on that issue's poster.