Part 5/14:
An important insight is that the threshold for increasing vs. diminishing testosterone can be quite narrow. Excessive volume, especially with longer rest periods (e.g., 3 minutes versus 2 minutes between sets), might dampen the anabolic response. French explains that intensity and the metabolic environment—namely, lactate buildup and glycogen depletion—are key drivers for hormonal release. Maintaining this balance helps ensure maximal hormonal response conducive to muscle growth and recovery.