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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