Sleep Quality
Sleep that restores.
Sleep Quality
What's happening
Sleep architecture, the cycling between NREM and REM, the depth of slow-wave sleep, the integrity of sleep onset, is biochemistry, not duration. Glycine has placebo-controlled-RCT evidence (Bannai's group, 3 g pre-bed) for improving subjective sleep quality and reducing next-morning sleepiness in volunteers with poor sleep. Magnesium is a cofactor for >600 enzymes and sits at NMDA receptors at rest, modulating glutamatergic excitability; Nielsen's controlled feeding study covered sleep-quality outcomes in older adults with low baseline intake. L-Theanine raises alpha-wave EEG activity. Relaxed-but-alert tone rather than sedation, which supports the wind-down. Caffeine timing matters: Rōnin contains ~66 mg caffeine from matcha; take it in the morning, not the evening.
Evidence. Peer-reviewed, PubMed-verified
Glycine. Bannai review of three placebo-controlled sleep-quality RCTs (Bannai & Kawai 2012, J Pharmacol Sci); Kumar GlyNAC pilot in older adults (Kumar 2021, Clin Transl Med).
Magnesium. Nielsen older-adult controlled feeding study (Nielsen 2010, Magnes Res); de Baaij comprehensive review (de Baaij 2015, Physiol Rev). [GB-NHC] Magnesium contributes to normal psychological function · normal function of the nervous system (≥56.25 mg/day; Rōnin delivers 200 mg).
L-Theanine. Hidese 200 mg/day × 4 weeks RCT in healthy adults (Hidese 2019, Nutrients); Nobre mental-state characterisation (Nobre 2008, Asia Pac J Clin Nutr).
Full register: /pages/research.
How Rōnin addresses it
| Ingredient | Dose | Role |
|---|---|---|
| Glycine | 2,000mg | Inhibitory neurotransmitter at brainstem strychnine-sensitive receptors |
| Magnesium Bisglycinate | 200mg elemental | NMDA receptor modulation; [GB-NHC] psychological + nervous-system function |
| L-Theanine | 200mg | Alpha-wave EEG modulation; relaxed-but-alert tone |
| Vitamin D3 | 2,000 IU | Algae-derived; [GB-NHC] muscle function + bones |
| Zinc Bisglycinate | 16mg elemental | [GB-NHC] cognitive function + oxidative stress protection |
All ingredients listed are included in the Rōnin Daily Formula at the stated doses. One daily scoop. Take in the morning. Contains caffeine from matcha.