ELi5: Do you get the same benefits from sleep if you’ve had a nightmare?

Question

ELi5: Do you get the same benefits from sleep if you’ve had a nightmare?

In: 1454

Answer 1

During sleep, it is believed that the brain is effectively washing waste out of your head by flooding it with cerebrospinal fluid.

So while you are still getting the benefit of a nice brain wash, you may have your day adversely affected by the stress of a particularly bad scare when you awaken.

https://journals.lww.com/neurotodayonline/fulltext/2019/12050/slow_waves_of_csf_during_sleep_clear_toxins_linked.9.aspx