New answers tagged sleep
This is a very interesting but difficult to answer question. That is because scientists are still debating about the various stages of consciousness. As it stands, there is evidence that people can learn even though they are asleep indicating that it is likely that sensory channels are open and information is being processed even when asleep. That likely ...
As far as I know it happens due the histamine release after meals. It leads to vasorelaxation and blood flow to the gastrointestinal tract. So, brain does not receive enough blood and you feel sleepy.
Digestion burns a lot of energy as many muscles enter the mechanism as well as many chemical reactions. Therefore, you feel tired as your body has less energy for other functions than it usually do. I remember a lecture at the university about sciences' history in which they explained an experiment, a long time ago, led on death sentenced men. After a very ...
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