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Debunking Matrix
The claimEvidence C · limited

A cold shower / quick jumps fix it

The evidence

The burst from your fight-or-flight (sympathetic) system lasts 5-15 minutes, then a deeper crash follows. It is a stopgap when a nap is impossible, not a substitute.

The mechanism, in brief

How to get through the day after an all-nighter, in order of the clock.

Sources (2)
  • Hilditch, C. J., Centofanti, S. A., Dorrian, J., & Banks, S. (2016). A 30-minute, but not a 10-minute nighttime nap is associated with sleep inertia. Sleep, 39(3), 675-685.
  • Tefft, B. C. (2016). Acute sleep deprivation and risk of motor vehicle crash involvement. AAA Foundation for Traffic Safety Research Brief.
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