All exercise programs aim to improve fitness, moreover most do this through high (volume) of repetition and not with intensity.
The problem with high repetition is that because it does not progressively improve function, over time, can diminish athletic performance longevity.
We know that something new begins with a specific demand against your current threshold. If your performance can only fall to the total number of repetitive repetitions, then your (total) work capacity will be low to moderate output, and why repetitive stress injuries begin to accumulate.
Simply stated, your tolerance to stress diminishes while you add more to do.
The definition of insanity is to do the same expecting new outcomes. Start with something different.
If you would like your current fitness measured or have any questions email: djsanidad@gmail.com