The purpose of this study is to determine if drinking a hot cup of coffee immediately before taking a 20-minute nap (the "Caffeine Nap") reduces the standard "grumpiness index" upon waking compared to drinking decaffeinated bean-water.
Participants will be randomized 1:1 to either the intervention group (active caffeine) or the control group (decaf). Participants will be forced to consume 8 ounces of the assigned beverage at a temperature of exactly 140°F (60°C) within a 2-minute window, and then immediately instructed to "go to sleep" in a room filled with aggressive ticking clocks. Upon sudden waking via a loud air horn at minute 20, participants will immediately complete the validated "Am I Mad at the World?" Visual Analog Scale (VAS).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Enrollment
50
Post-Nap Grumpiness Score
Measured using the proprietary Grump-O-Meter Scale (0 to 10, where 0 is "delightful" and 10 is "don't look at me or I will quit").
Time frame: Exactly 90 seconds post-air horn blast.
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