The Running Scientist: How Low Testosterone Can Make You Faster, The 4 Supplements That Actually Work, & The Warm-Up That Wins a 5K PR | Dr. Bill Evans

Dr. Bill Evans admits the post was rage bait. But the science underneath it isn't.

Dominic opens by asking about Evans' claim that you can run faster with low testosterone, and Evans cheerfully cops to baiting the testosterone crowd before laying out the actual evidence. 

Two things can be true at once: train hard for years and your T drops, and your performance keeps climbing anyway. He walks through Anthony Hackney's overtraining research, the 80-kilometer-per-week marker where androgen deficiency starts showing up, and the diffusion-distance argument for why the best marathoners in the world aren't carrying much muscle. 

Then the necessary caveat: performance and health are not the same conversation, and bone, libido, and mental health all sit on the other side of that ledger.

From there it opens up. 

Evans gives a full explainer on how a study actually gets published and how to tell a credible one from a headline, including where pharma funding does and doesn't compromise the work. He and Dominic get into whether anyone can be an Olympian, whether mindset is trainable (Evans uses his own OCD and exposure therapy as the case study), and the Joe Burrow story about a nine-year-old who didn't feel pressure.

The back half is rapid-fire practical: how to warm up for a 5K and why the pickups should be near mile pace, why your treadmill is probably lying to you, the RPE scale as a free lactate meter, the bicarb lotion study he's running this fall, his unsponsored supplement stack, and the one thing every cross country runner should do this season.

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