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correlational
positive effect
Taking 3 grams of glycine before bed might help people reach deep sleep faster, according to sleep monitoring equipment
Scientific Claim
Glycine ingestion (3 g) before bedtime is associated with reduced slow wave sleep latency as measured by polysomnography in individuals with chronic sleep dissatisfaction
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.”