Blood is good
We all need blood circulating our body to survive. It helps supply oxygen to our cells and tissues, keeping us alive.
33. The most common blood type
You’ve probably given blood in the past. If not – get on it! You soon after discover your blood type.
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If you’re blood type O, you’re a member of the most common blood type. Blood type O are known as universal donors.
32. The rarest blood type
It’s actually a blood type known as ‘h/h’, or ‘Bombay’. It’s so rare that only a few hundred people have been recorded with it.
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They, similar to type O donors, can lend their blood to almost anyone. Unfortunately, they can’t receive from anyone except those with the Bombay blood type.
31. Blood weighs surprisingly little
Considering how important blood is to our bodies, you’d think it’d weigh more than it does. But it only takes up 7% of our entire weight.
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