Sleep inertia is the groggy feeling which lasts about 30 minutes after waking up from a 30-60 minute nap. Waking up during REM sleep (deep sleep) results in this grogginess.
Sleep inertia is avoided by taking a longer (90 min.) nap because an entire sleep cycle (including the REM sleep) is thus concluded.
Sleep inertia can also be avoided by taking shorter (10-20 min.) naps, meaning waking up before hitting the REM phase of a sleep cycle.
Sleep inertia is avoided by taking a longer (90 min.) nap because an entire sleep cycle (including the REM sleep) is thus concluded.
Sleep inertia can also be avoided by taking shorter (10-20 min.) naps, meaning waking up before hitting the REM phase of a sleep cycle.
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