Quote from Thunderdog:
Actually, brain cells die from simply breathing, but that's not the point.
http://www.webmd.com/content/article/117/112649.htm
Interesting article. But this paragraph worries me:
"Kaplan is a big advocate of napping. "Fifteen or 20 minutes may be all you need," he tells WebMD. "One strategy for truck drivers is to take a full cup of coffee, then immediately follow with a 30-minute nap. Caffeine doesn't take effect for about 30 minutes, so you get the benefit of both."
I don't think 30 minutes of sleep is enough for a truck driver...
