I recently received a notice congratulating me on donating a gallon of blood. I quickly did some research on Wikipedia and learned that the human body has slightly over a gallon of blood pumping through it. Clearly, if I gave a gallon of blood in one sitting I would be a goner. Shoot, even if I only donated one third of my blood (approximately 3 pints) in one sitting I might suffer some tough consequences. But since I donate one pint of blood at a time, my body hardly misses it and I can donate as frequently as seven times a year without missing a heartbeat (pun intended). My blood donations have quickly piled up and in a very short time I have given a gallon.

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