# Why do flu-like symptoms always get worse at night?

**URL:** <https://boards.straightdope.com/t/why-do-flu-like-symptoms-always-get-worse-at-night/167371>\
**Category:** Factual Questions\
**Created:** [April 8, 2003, 7:35pm UTC](https://boards.straightdope.com/t/why-do-flu-like-symptoms-always-get-worse-at-night/167371 "2003-04-08T19:35:37Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![moejuck](https://avatars.discourse-cdn.com/v4/letter/m/57b2e6/32.png) [@moejuck](https://boards.straightdope.com/u/moejuck)\
**Post date:** [April 8, 2003, 7:35pm UTC](https://boards.straightdope.com/t/why-do-flu-like-symptoms-always-get-worse-at-night/167371/1 "2003-04-08T19:35:37Z")

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I have been sick for about 3 days with strep throat, I think. What drives me crazy is that I feel pretty well during the day, but towards the evening my symptoms get much worse. What causes this to happen? Is this just a natural rythm of the body?