The degree to which one should exercise is overload.
• The programs of exercises need to be increased in duration and difficulty to remain efficient due to the principle of overload.
• When a person works out at a higher level, the body adapts with the enhanced demand, and this greater level ultimately turns one's body into new normal.
• Therefore, to stay efficient, one must increase the difficulty and duration of the exercise program to sustain the suitable level of overload.
Thus, the degree to which one should exercise is overload.
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