People I know who indulge in long nights and daytime naps are the ones who have flaked out the earliest.
People I know who refuse to nap have had sharp brains to the end — in their 90s.
But I’m not scientist.
that could be true- i have had to nap due to physical issue- likely Chronic fatigue- and my brain gets so exhausted- brain fog- it’s like trying to think through complex issues while having the flu where your brain just doesn’t want to work well- only all the time!
They aren’t talking about naps or excessive sleep, they are talking about good, deep, restful sleep, which doesn’t have much to do with the length of your sleep cycle.
If you feel the need to nap a lot, or feel so tired you cannot easily get up, it could be because your sleep quality is poor and you aren’t getting to the sleep state you need. You could have sleep apnea or high anxiety, etc.