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Sleep & circadian

Peer-reviewed research concerning sleep & circadian, summarized and appraised in plain language with every source cited.

29Studies

29Human studies

2026Most recent

4Countries

Higher Levels of Morning and Daytime Light Exposure Associated with Positive Sleep Indices in Professional Team Sport Athletes.

Nature and science of sleep2024n = 17

OtherHuman

This study looked at how light exposure affects sleep in professional athletes. It tracked 17 male Australian Football players for 14 days, using wrist devices to measure sleep and light…

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Effects of an Acute Dose of Zinc Monomethionine Asparate and Magnesium Asparate (ZMA) on Subsequent Sleep and Next-Day Morning Performance (Countermovement Jumps, Repeated Sprints and Stroop Test).

Nutrients2024n = 19

OtherHuman

This study looked at whether taking ZMA, a supplement combining zinc, magnesium and vitamin B6, before bed for two nights could improve sleep and next-day performance in healthy active men.…

Better Sleep Brain Fog Magnesium

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