Based upon this week's labs why is it hard for a fit person to get an exercise benefit?
Well as we have tested, thoroughly, over and over again how heart rate is affected by repetitive exercise and how it affects reaction time, it is apparent that benefit from exercise takes time, because in order to get the heart pumping more steadily, one must train it to be used to beating harder and faster, so that each beat causes blood to flow faster and transport materials throughout the body. In order to do this, the heart must be strained, just like any other muscle. But without adding resistance to its actions, the only way to strengthen the heart is by making the body push blood faster. This is done with cardio-based exercise.
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