Heart rate increases with the intensity of exercise because the body needs to supply more oxygen to muscles and take more carbon dioxide away from them.
La frecuencia cardíaca aumenta con la intensidad del ejercicio para suministrar más oxígeno a los músculos y eliminar más dióxido de carbono de ellos.
| Front | Why does our heart rate increase the more intense the exercise is? |
|---|---|
| Back | Because our body needs to get more oxygen to the muscles and take more carbon dioxide away from the muscles. |
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