What is happening physically when I get sleepy and when I wake up?
Posted by stacey, at biology.stackexchange.com,
After a week of too little sleep, I slept about 12 hours last night to "catch up". It made me wonder: what is happening…
After a week of too little sleep, I slept about 12 hours last night to "catch up". It made me wonder: what is happening…
What keeps the cerebrospinal fluid circulating? Is it pumped by something? This picture from wikipedia seems to indicate that…