Caffeine...

Caffeine is a Mental Illness! 10grams of caffeine will kill a person. Period of inexhaustibly.

http://en.wikipedia.org/wiki/Caffeine

A healthy mind
resides in a healthy soul,
resides in a healthy body. -- Soul Eater

My Top Ten Tips on how to become a Rockstar Programmer item 11.dont drink too much coffee

webMD:Quit Caffeine While Pregnant sugary soft drink is bad for health.