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A comment on Is surviving on 20-minute naps bad for you?. Parent comment

Re:Is surviving on 20-minute naps bad for you? by bryanlarsen on Wednesday May 13, 2015 @11:31AM (#9539670)
I still feel groggy after a 90 minute sleep; it's not as bad as waking up in the middle of the cycle, but I still feel groggy. If I nap for 3-15 minutes, I wake up feeling as awake as I am during exercise.
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Re:Is surviving on 20-minute naps bad for you? by bsummer4 on Wednesday May 13, 2015 @02:33PM (#9541015)
Are you sure you're not still waking up in the middle of the cycle? 90 minutes is just a loose generalization. Different people have different sleep cycles and take different amounts of time to fall asleep.

Personally, 2 hours works well for me but 90 minutes does not.

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