Dr. Anne Truong explains why men who lift weights between 7 and 10 AM get up to 30% more testosterone boost than those who train at night. Morning cortisol levels amplify the hormone response when combined with resistance exercise, essentially giving your testosterone factory a double shift.
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Research shows that men who exercise in the morning between 7:00 AM and 10:00 AM, they get significant higher testosterone boost from the exact same workout compared to men who do that same workout in the evening. Same exercises, same set, same rep, but the morning group gets a higher testosterone response. Why? Because in the morning, your cortisol is naturally at its highest point. And here is the fascinating part. When you pair elevated cortisol with resistance training in the morning, your body amplifies the testosterone response. It is like giving your testosterone factory a double shift. So, studies have shown that morning exercisers can see up to 30% greater post-exercise testosterone spike compared to evening exercisers. 30% from the same workout.