and……why is TUT so Important for Building Muscle? Apart from something Grandma used to say....tut,tut,tut, TUT is a commonly used term in the bodybuilding industry and it stands for ‘time under tension.’ It refers to the duration of time your muscles are under tension while they’re being worked. And one of the things I like about the TUT method of resistance training is it … [Read more...] about What is TUT or Time Under Tension?