Slow Wave Sleep: what is it and how it help you recover

Added: 2026-05-16

[00:00:00]Slow wave sleep is especially important for the frontal cortex, [music] the part of your brain that handles judgement, planning, and self-assessment.

[00:00:09]So, when you're chronically losing N3, [music] you are degrading the very tool you can use to notice there's a problem.

[00:00:17]You lose the instrument [music] that you need to detect the loss. A research team at the University of Pennsylvania put people on 6 hours of sleep a night for 2 weeks [music] and tested their cognitive performance every day.

[00:00:29]By the end of 2 weeks, the subjects were performing at the same level as a separate test group who hadn't slept for 48 hours beforehand. And when they asked these subjects how they felt, "Oh, I'm fine. I'm basically normal."

[00:00:42]But, they weren't normal. Their brains had lost the ability [music] to notice how impaired they were. This is exactly why people who say, "I've always been fine on 6 hours [music] sleep." are the ones most at risk.