Agreed – wish I knew why that was. Probably has to do with falling into deeper stages of sleep after that point and the body preparing for a long rest.
I read somewhere once that the body sleeps in 90-minute cycles (approximately). The first half hour, you descend into deep sleep. The middle half hour you’re in deep sleep. The last half hour, you come out of deep sleep. Lather, rinse, repeat for your entire time asleep. As such, I can see it making sense that if you go beyond 20 minutes, you do more harm than good, because you’re shocking your body out of deep sleep to a state of awakeness that it doesn’t want to handle.
I wish I could remember where I saw that. Sorry I can’t provide backup other than my memory.
I used to do that at the university library. Just that I didn’t have a laptop back then and used a fat book called “Parcival” – it’s a romance from the middle ages :-)
QuietStorm27 almost 12 years ago
I feel rundown sometimes in the middle of the day too Betty, but I have a lot more children than you do and I’ve returned to college.
Greg Johnston almost 12 years ago
Agreed – wish I knew why that was. Probably has to do with falling into deeper stages of sleep after that point and the body preparing for a long rest.
XianProf almost 12 years ago
I read somewhere once that the body sleeps in 90-minute cycles (approximately). The first half hour, you descend into deep sleep. The middle half hour you’re in deep sleep. The last half hour, you come out of deep sleep. Lather, rinse, repeat for your entire time asleep. As such, I can see it making sense that if you go beyond 20 minutes, you do more harm than good, because you’re shocking your body out of deep sleep to a state of awakeness that it doesn’t want to handle.
I wish I could remember where I saw that. Sorry I can’t provide backup other than my memory.
Comic Minister Premium Member almost 12 years ago
Sleep tight Betty.
Adele Derwald almost 12 years ago
I used to do that at the university library. Just that I didn’t have a laptop back then and used a fat book called “Parcival” – it’s a romance from the middle ages :-)