The Most Effective Weight Training, Cardio & Nutrition for Women | Dr. Lauren Colenso-Semple

Normal testosterone range barely affects muscle gains

Within the normal 300-900 ng/dL range, testosterone levels have little impact on muscle growth. Only supraphysiological doses change the equation.

"We don't see this relationship between being closer to 900 and responding better to resistance training, as long as you're within normal range."

Post-exercise hormone spikes do not drive muscle growth

The acute testosterone and growth hormone spike after exercise is not the driver of long-term muscle growth, contrary to earlier beliefs.

"That acute response to exercise, that increase in post-exercise testosterone, growth hormone, people used to think that was the driver of hypertrophy. It's not."

Full-body workouts 3x per week build muscle effectively

A Monday-Wednesday-Friday whole body resistance training program with compound movements is an effective framework for muscle growth.

"If we're thinking about muscle growth for overall health, then maybe we're not doing as many accessory-type exercises."

Any rep range builds muscle if you train near failure

Hypertrophy occurs across all rep ranges from heavy singles to high-rep sets, as long as you train close enough to failure.

"We do see similar growth whether you're training in high load, low rep ranges or lower load, high rep ranges, provided you train close enough to failure."

Do resistance training before cardio, separate by hours

When combining strength and cardio, perform resistance training first and separate sessions by several hours to minimize interference.

"Assuming your hypertrophy or strength is the goal, perform that first and if possible, separate them by at least several hours."

Women see best results from consistent lifting programs

Program hopping through fitness fads leaves women disappointed. Sticking to one resistance program long enough produces visible results.

"You're just program hopping and disappointed. When you stick to a good resistance training program for long enough, you start to see results."

Menopause itself does not accelerate muscle loss

Age-related muscle loss is driven by physical inactivity, not the hormonal changes of menopause. Lean mass does not drop across the transition.

"We see age-related muscle loss exacerbated by physical inactivity. But lean mass across the menopause transition isn't accelerating the loss of muscle."

Fasted training neither helps fat loss nor hurts gains

Acute fat oxidation during fasted exercise does not lead to more fat loss long-term, and stored glycogen prevents muscle loss.

"Acute fat oxidation post-workout isn't meaningful enough to offset the rest of the metabolism such that you don't lose more body fat long term."

Do lab resistance training studies replicate the gym?

Huberman questions whether untrained subjects doing leg extensions in lab studies translate well to real-world gym training outcomes.

"I'm curious about how experiments are done in terms of resistance training and muscle growth. Do you think it replicates the gym well enough?"

Walking with a weighted vest is no substitute for lifting

Weighted vests marketed to women as resistance training alternatives do not improve muscle or bone density. Actual lifting is required.

"Walking with a weighted vest is not going to improve muscle or bone. It's not the appropriate stimulus. It's not a substitute for resistance training."