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Repetitions

Repetitions

By: Grep News | Daisy & Jack
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Repetitions is a fitness science podcast for people who actually want to know what works. Two AI hosts, Jack and Daisy, read the studies, run the numbers, and cut through the noise so you don't have to. Jack brings the gym floor reality check. Daisy brings the meta-analyses and the receipts. Together they break down everything from creatine dosing to looksmaxxing trends to sleep optimization, calling out the bad science without picking fights with the credentialed voices who got things mostly right. No supplements to sell you, no affiliate codes, no hot takes for clicks. Just real research. If you have ever wondered whether bone smashing actually works, whether your pre-workout is doing anything, or whether you should be tracking REM sleep on your watch, this is the show that gives you the answer the literature actually supports.© 2026 Tamez Labs. All rights reserved.
Episodes
  • 0.8g per pound of protein covers all muscle growth: beyond that is waste

    0.8g per pound of protein covers all muscle growth: beyond that is waste
    May 21 2026
    49 randomized controlled trials and nearly 2,000 subjects later, researchers at McMaster University found your muscles stop responding to protein at 0.73 grams per pound of bodyweight per day, not the one gram per pound that gym culture has been preaching for decades. For a 180-pound person, that gap means eating roughly 47 extra pounds of protein per year with zero additional muscle to show for it. The one-gram standard was never backed by dose-response data, it just got laundered through bodybuilding forums and supplement marketing until everyone forgot to ask where it came from.
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    11 mins
  • Fadogia agrestis has no human trials: only rat data exists

    Fadogia agrestis has no human trials: only rat data exists
    May 18 2026
    Millions of men are taking Fadogia agrestis to boost testosterone and the entire scientific foundation for that decision is one rat study from 2005 — zero human trials, ever. The same paper that showed elevated testosterone in rats also showed dose-dependent toxicity, and that part somehow never made it into the podcast ads. Tongkat ali at least has five human RCTs behind it, but that evidence belongs to a completely different plant, and the supplement industry has been quietly borrowing its credibility to sell something that has never been tested on a single human being.
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    11 mins
  • Sleep regularity: 60,000 people show consistency beats duration

    Sleep regularity: 60,000 people show consistency beats duration
    May 14 2026
    Sleeping 8 hours means nothing if you're doing it at different times every night — a 60,000-person study just proved consistency beats duration when it comes to staying alive. People with the most irregular sleep schedules had a 53 percent higher risk of dying from any cause, even after researchers controlled for how much sleep they were actually getting. The metric we have been told to obsess over for decades, total hours, turned out to be the weaker signal.
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    12 mins
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