Our Middle School Mysteries series investigates childhood rumors you never bothered to fact-check yourself. Everyone knows the first person out is the first to get pranked. The show brought two test subjects to a California sleep lab, hooked them up to brain monitoring equipment and lined the bed with moisture-activated voice alarms. Psychologists believe our expectations are powerful enough to influence the outcome of a specific occurrence.
Will putting people's hands in warm water really make them wet the bed?
Does the "Hand in Warm Water" Trick Really Work? | Mental Floss
Does putting a sleeping persons hand in warm water really make them pee?
As the kids head off to summer camp, many of them will partake in the timeless tradition of trying to get their friends to pee themselves by slipping their hand into some warm water. Does this actually work, or have generations of campers wasted their efforts? To test things out in a controlled environment, the MythBusters once tried the trick on each other and a crew member in a lab with sleep-monitoring equipment and moisture alarms in the beds.
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