It's red, you need it to survive, and you can donate it.That's probably the extent of what most people know about blood.Heck, one-third of Americans don't even know WHAT type of blood they have (and technically, it's not all red.)Kind of crazy, considering it's one of the most important substances in the world.
#people #back #united-states #approximately #ingredients #technically #bottom-line #blood-pressure #circulation #heart-health
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