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#Coffee

Articles tagged #Coffee on Vitalspell.

Vintage alarm clock surrounded by coffee beans and a grinder in warm lighting, visualising the relationship between caffeine consumption and sleep timing

Caffeine within 12 hours of bedtime harms sleep, often without you noticing

A randomized crossover trial in Sleep found that 400 mg of caffeine disrupts sleep when consumed within 12 hours of bedtime, while 100 mg is safe up to four hours before bed. Most participants could not tell when caffeine was harming their sleep.

Margot Ellis8 min read