mishaljabeen65 mishaljabeen65
  • 02-03-2017
  • Biology
contestada

A person who's resting heart rate is 55 and after exercise, his heart rate is 160, is said to have a well developed heart muscle. Why is this so?

Respuesta :

hayleebug0806 hayleebug0806
  • 02-03-2017
because when exercising your heart pumps more blood to your body and 
it has more space to fill so it beats faster
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