rct
2013
High Quality
Caffeine effects on sleep taken 0, 3, or 6 hours before going to bed
Unknown authors
Published in J Clin Sleep Med
Key Findings
Caffeine taken even six hours before bedtime significantly reduced total sleep time.
Conclusions
Afternoon caffeine can worsen the next day's energy dip.
Outcomes Measured
Caffeine consumed even six hours before bedtime significantly reduced total sleep time.
Study Details
Year:2013
Quality Score:7/10
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