How does swimming burn so many calories (close to higher intensity workouts) even if my heart stays in the warm up zone the whole time?
In: 96
Apart from feeding you body with nutrients the heart has to keep the blood pressure in good levels.
If you are standing up then your heart rate increases to compensate.
In water you are laying down. That allows the heart to beat slower because it needs less pressure.
Also, have you tried swimming butterfly? Your heart rate will go up really fast.
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