The recent evidence I've seen suggests around 8 hours of sleep as an absolute minimum. Of course, there are so many factors that would need to be taken into account that this is just "suggestive." If for some reason I don't get enough sleep, I usually need to take a nap. I can feel a sensation that I know means that I either take a nap or get a nasty headache. How often I take a nap depends upon what I'm doing, which can disrupt sleep patterns. |