Welcome to 2011 - where a new study indicates you tend to make bad decisions when you're tired.

The authors suggest that changes in the brain chemical dopamine after sleep deprivation lead to altered decision-making behavior.

Wait, are you telling me that instead of thinking about an important decision, you're thinking, "Hey, I'm really tired." - or perhaps just nodding off?

Attention Gamblers! [who also read Journal of Neuroscience] - or who frequent News That Vexes: "The more tired you are -- even if propped up by medications, alcohol, coffee or bright lights and noise -- the less likely you are to carefully evaluate your risk of losing."

These unsurprising surprising results courtesy of Michael Chee, MD. Drop him a line to congratulate him!