I donated blood for the first time about 2 months ago. I was never eligible before due to overseas travel, south of the border piercing, then pregnancies and nursing. So now, I am ALL done, and am eligible to donate. I am O-, and am heading down to town today to donate blood. The first time I did it, I almost passed out, so this time, I'm eating a good big breakfast, and am drinking a lot of water. i hope that helps. I encourage all of you to go donate blood if you can. It's nice to be able to help others, and I think it burns calories to re-make that blood.. at least I hope it does! I'm bringing DD's 5 and 3 with me, and a portable dvd player and Sleeping Beauty, to keep them occupied... wish me luck!!!