Have you ever worked out and watched your muscles grow before your very eyes? You probably have, and while this is a fun, satisfying sight, it doesn't last. What you experienced is known as a muscle ...

Synthol has been used by bodybuilders in the past to bulk up quickly. Romario dos Santos Alves, a bodybuilding enthusiast, works out his muscles in the gym, April 4, 2015, in Caldas Novas, Goias, ...