Brain’s waste-clearance pathways revealed for the first time. Wastes include proteins such as amyloid and tau, which have been shown to form clumps and tangles in brain images of patients with Alzheimer’s disease.

[u/Wagamaga]

https://news.ohsu.edu/2024/10/07/brains-waste-clearance-pathways-revealed-for-the-first-time

[u/rjcarr]

I always wake up at exactly 6 hours after I got to sleep and I can never just fall back asleep. I'm like wide awake. I've been this way for like 15 years now so yeah, it makes me pretty nervous. Maybe one day per month I'll sleep like 8 hours and that's it.

[u/dentedgal → u/rjcarr]

Do you feel sleepy/tired after having 6 hours of sleep?

Because if you don't, it's most likely not a problem. Adults generally need between 6-9 hours of sleep, both ends being normal.

[u/rjcarr → u/dentedgal]

Yeah, the problem is sometimes that 6 hours goes down to 5 hours, and it's not uncommon. I'm generally not tired, at least not when I wake up, though.

[u/apudapus → u/rjcarr]

same! i do get a lot done in the morning because of this, though.

[u/catr0n → u/rjcarr]

If you’re really worried, you could also do a sleep study too! But if you’re feeling rested then you’re probably all right

[u/Janktronic → u/rjcarr]

I've seen it suggested that 8 hours straight is a new thing since industrialization. Some research shows that people would sleep 4 or so hours, wake up for some few hours and then sleep again for another similar period. If you are really concerned, maybe try taking a nap during the day, especially after a workout. Sleeping after working out is supposed to boost HGH.

[u/Narrow-Ad-1184 → u/rjcarr]

There are some people who genetically feel fully refreshed on lower hours of sleep.

Short Sleeper Syndrome: Causes, Symptoms, and Diagnosis (healthline.com)%20is,the%20day%20despite%20less%20sleep.)

[u/ookaookaooka → u/rjcarr]

I think if you feel fully rested after 6 hours, then your body's telling you that's as much sleep as you need