Your red blood cells race through your body
Red blood cells zip through your entire body in about 60 seconds, efficiently delivering life-sustaining oxygen to every tissue, a testament to your circulatory system's speed.
Your body's oxygen carriers, red blood cells, complete a full circuit through your circulatory system in just about 60 seconds. This incredible speed is thanks to your heart, which pumps roughly 5 liters of blood per minute at rest, matching your entire blood volume. These tiny, disc-shaped cells, numbering around 25 trillion, deliver oxygen to every tissue, from your brain to your toes, fueling cellular energy.
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