True Tension Time

The Hidden Currency of Muscle Growth and How to Feed It

Repetitions, sets, weights, and even the oft-cited Time Under Tension describe what you do in the gym. On their own, however, they say little about how much muscle you will build or how strong you will become. How else could one explain why training philosophies that could hardly seem more opposed from Dorian Yatess brutal HIT to Serge Nubrets volume-based approach keep producing similar results?

This book resolves that contradiction through a biologically precise concept: the recruitment-time integral during full motor-unit recruitment, referred to here for simplicity as True Tension Time (TTT). It shows how load magnitude, rate of force development, and fatigue determine how much of a repetition actually counts toward TTT and why very different training styles ultimately converge on the same hypertrophy-relevant currency.

Yet training stimulus alone is not enough. The