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Sunday 29th November 2015
Max 12°C | Min 7°C

Why are you more tired after a good night's sleep?


If you sleep for a long time, why do you feel more tired than if you’ve had a bad night’s sleep?
Nathan, Islington


** Definitive **
Name: James O’Brien
Qualification: Sleeps on the job
Answer: When you sleep, your body releases endorphins which make you feel sleepy, so the longer you sleep, the more you have.