digest
Short Summary
Main recommendation: Take 3 grams of glycine about an hour before bed to improve sleep quality, reduce middle-of-the-night waking, and reduce nighttime urination. The speaker says 3 grams is the research-supported dose, with glycine's effects linked to body temperature regulation, the NMDA receptor, and bladder signaling. He also promotes Verso's Evening Being, a product he says contains glycine alongside saffron, magnesium threonate, and theanine.
Key Points
- A Sleep and Biological Rhythms study reportedly found that 3 grams of glycine improved subjective sleep markers in people with poor sleep, including faster time to REM sleep and better daytime memory consolidation.
- A Journal of Complementary and Alternative Therapies study reportedly gave humans 3 grams of glycine or a placebo for four weeks, with glycine users having fewer nighttime urination episodes and longer intervals before needing to urinate.
- Rodent research cited by the speaker suggests glycine redirects blood flow to the extremities and cools the core, and that blocking the NMDA receptor or destroying the suprachiasmatic nucleus eliminated glycine's sleep and blood-flow effects.
- The speaker proposes glycine may keep creatine and ATP levels stable, reducing the energy-depletion microarousals that wake people up, and may blunt the emotional and cortisol response to stress that disrupts sleep.
Details Worth Noting
- Concrete instructions: Take at least 3 grams of glycine, not a smaller amount, about one hour before bed rather than right before bed, because it takes time to absorb and metabolize. The speaker says taking it earlier allows the body to cool down, improving sleep onset latency so you fall asleep faster.
- The speaker says glycine may be a useful alternative to creatine-related sleep effects, noting that creatine itself is also beneficial and that adding glycine helps replenish creatine stores so brief energy valleys are less likely to cause waking.
- The speaker names the Verso Evening Being product, stating it contains 28 mg of clinical saffron, 3 g of glycine, magnesium threonate, and theanine, with a 15% discount through the link in the video description.
- Caveats: much of the evidence cited is from small studies, rodent or fish research, or self-reported sleep measures, and the speaker's mechanistic explanations (such as NMDA receptor and ketamine comparisons) are his interpretation rather than established findings.
Bottom Line
Glycine at around 3 grams taken an hour before bed is the video's main suggestion for sleep and nighttime waking, though the supporting evidence is limited and the speaker has a commercial interest in a related product.
