I just started donating my blood on a regular basis during this last summer and I highly recommend it. Every time you donate blood you could save up to 3 lives. The Red Cross needs a 5-7 day supply of blood to be prepared for an emergency, but so few donate during the winter months that they often have less than a 1 day supply. You can donate once every 56 days and it takes less than an hour each time. Besides feeling awesome that you helped someone, you also get perks every time you donate- like juice and cookies, coupons for pies, putting your name in a drawing for a $500 visa card, tickets to things and a neato donor card to carry around in your wallet. and if you're O+ (like me) or O-, you get to be a Universal HerO. I got a letter authenticating it today. It's so easy and so important, please sign up to donate today and become a regular donor!