# Why does a long nap cause such a wierd feeling afterwards?

**URL:** <https://boards.straightdope.com/t/why-does-a-long-nap-cause-such-a-wierd-feeling-afterwards/270327>\
**Category:** Factual Questions\
**Created:** [October 21, 2004, 2:24am UTC](https://boards.straightdope.com/t/why-does-a-long-nap-cause-such-a-wierd-feeling-afterwards/270327 "2004-10-21T02:24:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Plan\_B](https://avatars.discourse-cdn.com/v4/letter/p/3ec8ea/32.png) [@Plan\_B](https://boards.straightdope.com/u/Plan_B)\
**Post date:** [October 21, 2004, 2:24am UTC](https://boards.straightdope.com/t/why-does-a-long-nap-cause-such-a-wierd-feeling-afterwards/270327/1 "2004-10-21T02:24:45Z")

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Ms. Plan B and I both have the same experience. If we take a short nap - less than 20 minutes - we wake up feeling refreshed and better. But if the nap lasts longer than 20 minutes it takes an hour or two to really wake up and get the cobwebs out.

Is this a common experience?

If so, what causes it?

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**Author:** ![vinniepaz](https://avatars.discourse-cdn.com/v4/letter/v/b4bc9f/32.png) [@vinniepaz](https://boards.straightdope.com/u/vinniepaz)\
**Post date:** [October 21, 2004, 3:40am UTC](https://boards.straightdope.com/t/why-does-a-long-nap-cause-such-a-wierd-feeling-afterwards/270327/2 "2004-10-21T03:40:26Z")

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there was recently a thread about this which i cant seem to find called “how can i sleep more effectively?” or something…