How to transform your brain into an calculator 3

We constantly count and make measurements in our everyday life: how many hours
must we sleep to feel really refreshed, what's our ideal body fat percentage, how
much time do we need to finish examining those documents, after how many miles
the gas tank of our car will be empty ... these are all examples of everyday problems
we constantly have to deal with, and that obviously would require a solution as more
effective as possible.
At the same time, however, we too often evaluate the factors involved in our
problems from a purely qualitative point of view rather than a quantitative one ,
giving them purely empirical solutions. That is, for example, instead of trying to
understand the proper amount of sleeping hours for our body, we too often try to sleep
enough to feel relatively fit. Rather than calculating our body fat percentage and
adjusting our diet accordingly, we prefer some kind of homemade diet that does not
really pay attention to our real physiological needs. And we do that despite it is
intuitive that addressing these issues from a quantitative point of view, and so
measuring, evaluating, calculating the quantities involved, would offer a greater
efficiency to our actions, and so would give us the ability to produce much more with
many less expenses in terms of time, money and resources.
Wait: this does not mean that you should run into some weird obsession for rational
assessments or for measuring every single aspect of reality. Your existence of course
needs even impulsively done actions, lessons learnt from your mistakes and the
coexistence with the inevitable unknown.