Skillful healthy eating technicians

4 Amazing Effects of Caffeine (and One That’s Not So Great)

Speaking of light, researchers compared the effects of caffeine on circadian rhythms to that of bright light, which is already a well-established mechanism for extending the circadian phase. Participants in a double-blind study took either a 200-milligram tablet of caffeine or a placebo just five minutes after studying a compilation of photos.

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