what does performance index mean while on gym equipment ?
one min its 31 then 29, whats the best for fitness ?
It's a parameter that evaluates the intensity of the exercise you're doing, taking into account such parameters as body size.
It was shown that the more proficient you are, the index goes lower, so you should take this as an overview of your general state. The numbers change when you're working, because your body has to adjust all the time, sometimes overcoming the stress, sometimes less so.
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