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correlational
positive effect
Taking 3 grams of glycine before bed might help people feel less sleepy during the day, according to their self-reports
Scientific Claim
Glycine ingestion (3 g) before bedtime is associated with reduced daytime sleepiness in individuals with chronic sleep dissatisfaction, as measured by the Stanford Sleepiness Scale
Source Excerpt
“Glycine lessened daytime sleepiness and improved performance of memory recognition tasks.”