Repeated exercise, or wasting, can change the way key genes work.

January often brings a sense of reset, along with goals of building muscle and losing fat – also known as body recomposition – through a more consistent fitness routine. But while muscle gains may ...

Joe Weider, the self-made fitness and bodybuilding guru who built a magazine empire that included more than a dozen popular publications such as Muscle and Fitness, Shape and Men’s Fitness, died on ...