If you're looking to gain muscle mass, a quick web search will tell you to "bulk" on a high-calorie, high-protein diet, progressively challenge yourself with heavier weights and rest in between ...

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

There's a lot of talk about lean muscle compared to bulk muscle, but experts say it's not worth differentiating the two.

Tsukuba, Japan—Different types of exercise encourage the formation of different types of muscle fibers, or the cells that make up your muscles. Slow twitch muscle fibers support endurance activities ...

Hypertrophy is the increase in size and volume of muscle cells through a specific type of resistance training. Trainers ...

Researchers have identified the role of the large Maf transcription factor family in regulating fast twitch muscle fibers. A mouse model lacking Maf expression in the skeletal muscles exhibited a ...