 Why does it work?
How is it that biphasic sleepers can get by on 4.5 or 6 hours of sleep every night --I mean every day? I mean, even if they're sleeping in increments that match up with the natural sleep cycle--which does help a lot--they're still not getting more than a few of these cycles. Basically what I'm wondering is why splitting up your sleep time into two blocks could ever reduce your needs. Why would it be any better than just getting the same total sleep time, but in one block? I know that personally, if I slept for 4.5 hours at night in one block, even though that period coincides with my natural sleep cycle, I probably wouldn't feel very refreshed. Why is it different for biphasic sleep?
Thanks in advance. |