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Wait, the human body makes a million red blood cells a second? That's kind of mind blowing.

• rbinv 4y ago
  That's what surprised me, too. Our bodies don't really "feel" all that active (even on a cellular level).
  • moreira 4y ago
    And that’s -only- the red blood cells. Consider how that’s only a tiny portion of your body. Think of all the other cells everywhere else. Constantly dying and being born. Isn’t it every 7 years or so that pretty much every cell in our body’s rotated out?
    • layer8 4y ago
      The red blood cells are actually roughly 80% of all cells in your body.
• layer8 4y ago
  The human body has 20-30 trillion red blood cells, roughly 80% of the total cell count in the body. So it’s not that surprising.