How does high progesterone affect muscle growth?
When progesterone levels are elevated, it occupies androgen receptors, preventing testosterone from effectively reaching muscle tissue. Consequently, despite training efforts, muscle growth can stall while testosterone circulates freely in the bloodstream.
✦
This is one answer. The complete system — the psychology, the biology, and the method — is in the book.
Read The Willpower Lie →Found an error? Let me know →