Here is something to think about in the hospital or on your morning commute.

According the news article, Early-morning bleariness worse than sleep deprivation, in Nature, researchers have found that people are as "woozy" when they first wake up as they are after drinking several beers. In fact your brain is at its worst in the first few awake minutes than it is after a whole night of sleep deprivation. The loss of brain power is equivalent to that caused by a 0.08% blood alcohol level. It can take anywhere between one and twenty minutes for the brain to power up and recover.

As the Nature article says, "The study has implications for people who have to wake up and react immediately, such as doctors on call or resting aeroplane pilots roused in an emergency. These people should be made aware that they are operating severely below par, Wright says, so that they can wait a few minutes before making life-or-death decisions."

Thankfully running a library is not life or death, because I have a feeling I am one of those people it takes 20 minutes to charge their brain.