why does the body always wake up so early after a night of drinking?
In: Biology
Different medications/substances will effect your sleep cycle differently.
We have 2 phases of sleep:
1. NREM stages 1-2: lighter sleep, sleeper is more easily arousable
NREM stages 3-4: deeper sleep, sleeper is more difficult to arouse
2. REM sleep: increased brain activity, loss of muscle strength
Phase 1&2 make up one sleep cycle lasting about 90-110 minutes each. Usually an adult will go thru 4-6 complete sleep cycles before waking up.
What alcohol does specifically is that it will speed the onset of sleep and disrupt REM sleep. It also causes the sleeper to awaken during the night and causes difficulty returning to sleep.
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