the.com/nap

a tactical retreat from consciousness that somehow makes you better at being conscious

means a short period of sleep, usually taken during the day rather than at night.

from From Old English hnappian, 'to doze or slumber lightly,' a word that seems to share roots with the old Germanic and possibly Dutch and German cousins for nodding off (German nicken, Dutch knappen have been suggested as relatives). The 'fabric nap' — the fuzzy raised surface on cloth — is a completely separate word, despite the spelling collision, so resist the temptation to imagine the two are related.

perfect length
10-20 minutes dodges grogginess and boosts alertness
NASA proof
26-minute naps improved pilot performance by 34 percent
named state
post-nap fog is called sleep inertia
royal habit
Churchill napped daily to fight a two-front war
caffeine combo
coffee before napping wakes you sharper, as it kicks in
for instance

the siesta — spanish afternoon rest tradition, 2-3 hours, still common in spain and latin america

power nap — 20-minute strategic nap studied by nasa, shown to boost alertness by 34%

the.com · every word