What did @stanmilsom1 actually say?
The creator's core argument is straightforward: people starting retatrutide often report energy crashes, and the culprit isn't the peptide, it's inadequate carbohydrate intake around workouts. He adds that retatrutide suppresses appetite, which means people are eating less without realising their fuel demands haven't changed. He also pushes hydration hard, claiming he drinks five litres of water plus electrolytes daily.
To be fair, this isn't someone selling a product or promising outcomes. It reads more like practical gym floor advice from someone using the compound themselves. That doesn't make it medically sound, but the intent appears to be harm reduction rather than hype.
Does the science back this up?
Partially, yes. The link between GLP-1 receptor agonist-induced appetite suppression and reduced energy intake is well-documented, and the downstream effects on exercise performance are a real and under-discussed problem.
Retatrutide is a triple agonist targeting GLP-1, GIP, and glucagon receptors. The phase 2 trial published by Jastreboff et al. (2023, New England Journal of Medicine) showed average weight loss of up to 24.2% over 48 weeks, with significant reductions in caloric intake. What that trial did not measure was exercise performance or muscle preservation under low-carbohydrate conditions, which is an important gap.
On carbohydrate timing specifically, research supports the idea that carbohydrate availability before and during resistance training affects performance. Margolis et al. (2021, Nutrients) found that carbohydrate restriction impaired high-intensity exercise output. The creator's instinct here is not wrong. Where it gets shakier is the implicit suggestion that carb timing alone explains energy crashes, which may also involve hormonal shifts, caloric deficit severity, or even the glucagon agonism component affecting glycogen metabolism.
What did they get wrong (or right)?
Let's give credit first. The appetite suppression point is accurate and worth saying out loud. GLP-1 class compounds reduce hunger signals reliably, and people genuinely do undereat without noticing. The framing that "your body still needs the same amount of fuel" is a bit blunt but directionally correct for someone maintaining a training load.
Where the video gets sloppy is the five-litre water claim. Drinking five litres of water daily without medical supervision carries a real risk of hyponatraemia, particularly when training hard. The electrolyte mention partially offsets this, but the creator presents a personal intake figure as though it's a general recommendation. It isn't. Individual fluid needs depend on body weight, sweat rate, climate, and training intensity. The European Food Safety Authority (2010) recommends roughly 2.5 litres of total water intake daily for men under normal conditions, not five litres as a baseline.
The claim that low energy "is not actually the peptide itself" is also an oversimplification. Glucagon receptor agonism can directly affect hepatic glucose output and glycogen dynamics in ways that carb intake alone may not fully compensate for.
What should you actually know?
Retatrutide is not approved by the FDA or MHRA as of mid-2025. It remains an investigational compound. Anyone using it is doing so outside a clinical trial context, which means there is no standardised dosing protocol, no long-term safety data in the general population, and no regulatory oversight of what they're actually receiving.
The energy and performance issues the creator describes are real phenomena reported anecdotally by users of GLP-1 class drugs. Research on semaglutide, for example, has flagged lean mass loss as a concern. Wilding et al. (2021, NEJM) showed significant weight loss with semaglutide but composition data suggested muscle mass was also reduced. Whether aggressive carbohydrate periodisation mitigates this in retatrutide users is genuinely unknown because the studies haven't been done.
The practical takeaway is this: if you're on a GLP-1 or multi-agonist compound and training seriously, monitoring your actual caloric and macronutrient intake, not just your hunger signals, is reasonable advice. But that conversation should happen with a clinician who knows your full picture, not through TikTok timestamps.