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correlational
positive effect
Taking 3 grams of glycine before bed might help people who have trouble sleeping feel like they slept better, according to their own reports
Scientific Claim
Glycine ingestion (3 g) before bedtime is associated with improved subjective sleep quality in individuals with chronic sleep dissatisfaction, as measured by the St. Mary's Hospital Sleep Questionnaire
Source Excerpt
“Glycine improved subjective sleep quality and sleep efficacy (sleep time/in-bed time), and shortened PSG latency both to sleep onset and to slow wave sleep without changes in the sleep architecture.”