It's Earth Day!
Give yourself an endorphin rush by doing something positive for the planet!
Generous acts aren't really selfless when you consider the biochemistry of the human brain. We are wired to feel good when we help others out. It may seem a tiny gesture to donate $10 bucks to the NRDC, to a pledge to turn the lights out when you leave a room, to buy a carbon offset for your car (from Terrapass, perhaps) or to try to work at home 1/week. (Or, to give up meat.)
But you can assure your pituitary and hypothalmus that when enough people are doing the same thing you are, it adds up. And then you get that feeling of, "Ah, yes, I belong to something bigger than myself!"
Wow, a feeling of belonging AND a feeling of being generous; that's two potential sources for your endorphin rush!
This message brought to you by too much caffeine on too little sleep.