The amount of time a muscle is held under tension or strain during an exercise set.
During TUT workouts, you lengthen each phase of the movement to make your sets longer. The idea is that this forces your muscles to work harder and optimizes muscular strength, endurance, and growth.
“As I train with a client and get to know their bodies, strength, mobility and mental capacity, we increase TUT sets to achieve maximum results.”
– Grant Bomber Barker