There is no robust data supporting the need to alter training based on the phase of the menstrual cycle. Women are not less capable during their period. Training should be adjusted based on subjective feelings (fatigue, symptoms) on a given day, not a predetermined hormonal calendar.

Yates treated his career like a science experiment, logging every workout. This data-driven approach showed him that increasing his training from three to four times a week completely stopped his progress, providing a personal, practical proof that more is not always better.

The body actively resists change and maintains its current state (homeostasis). To stimulate muscle growth, you must apply a stress greater than what it has previously adapted to, forcing it to reinforce itself. This requires a "bloody good reason" to change.

The fitness industry's fearmongering about cortisol is misleading. The acute cortisol increase during exercise is a normal, necessary response for regulating blood pressure and glucose. It does not contribute to the fat storage seen in chronic conditions like Cushing's syndrome.

Dorian Yates questions blind faith in "science-based training," noting that many lab studies don't apply to elite athletes. He argues that if a theoretical model, like protein synthesis timing, doesn't translate to better real-world results, it should be discarded in favor of practical experience.

The act of training creates damage and stress; it doesn't build muscle directly. Growth occurs during the recovery and overcompensation phase. Training again before this process is complete is counterproductive, like constantly demolishing a half-built wall.

Instead of pushing for linear gains indefinitely, Yates recommends periodizing training. Go all-out for five to six weeks, then intentionally back off for two weeks with lighter, submaximal workouts. This "sawtooth" pattern allows for full recovery and prevents plateaus.

The idea that you must consume protein within a narrow window post-exercise is a myth. Research shows that muscle protein synthesis remains elevated for over 24 hours after resistance training, making immediate protein intake unnecessary for optimizing muscle growth.

Within the wide, normal range of testosterone for both men and women, hormone levels are not predictive of one's ability to gain muscle. Only supra-physiological levels, such as those from anabolic steroids, create a significant, predictable advantage in muscle growth.