Today was the four-month anniversary of giving a double donation of blood. To celebrate, I went to United Blood Services and gave another double donation. Including today's donation, I have given 2 gallons and 3 pints of blood (incrementally over the past few years - not all at once). The double donation is weird because they take out a pint of blood and separate it - plasma in one bag and red blood cells in another. Then they feed the plasma back into your arm mixed with saline solution. The solution is cold and feels very strange. Once all the plasma has been returned to your body, they repeat the process. You can only give blood every 4 months when they do it this way, rather than every two months as with a regular one-pint donation.

I like it, though. it doesn't make me lethargic like the single donation does. Plus, it's really cool to watch the juices flowing in and out of your arm. It's almost like a lava lamp...