Our body needs OXYGEN to function . And we need a lot of it during exercise. The above diagram shows how our heart circulates and deliver blood rich in oxygen all through out our body. The process starts when the deoxygenated blood (less in oxygen ) from our body is received by our heart. Then, it is pumped out to our lungs where it receives oxygen. The oxygenated blood from our lungs is then returned to our heart for distribution to the different parts of our body for its use.
For this, let us be grateful and love our heart. 🙂
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