Muscle Gain Guide: Build Lean Mass and Get Ripped Fast

Building lean muscle mass effectively involves a combination of high-density training and strategic supplementation like whey protein or creatine. Discover why women should lift weights for fat loss and how to maintain muscle while getting lean.

Can 13-Year-Olds Get Big Muscles?

Published Jul,08 2011 | By Sarah Barnes

Most 13-year-olds, especially boys, haven't yet completed puberty, which means lifting weights won't produce big muscles. Your muscles are influenced by your hormones, and until your body matures, you can't build big muscles.