One Stage of Sleep Seems to Be Critical For Reducing Dementia Risk

<img width="1024" height="415" src="https://www.sciencealert.com/images/2023/11/SeniorPersonSleepingInDaylight.jpg" alt="Senior person sleeping in daylight"/>Our brains need it. 

https://www.sciencealert.com/one-stage-of-sleep-seems-to-be-critical-for-reducing-dementia-risk