Albert Einstein, one of the greatest minds to ever live, chose purposefully not to even memorize his own telephone number. He obviously had enough brain capacity to memorize a short series of numbers, but still, he chose not to. He viewed memorizing these digits as a waste of precious life energy.
Instead, he used this energy to memorize more important things, which lead to revolutionary accomplishments in the field of Physics.
The same principles of energy that Einstein acknowledged, apply to us. It is easiest to see the effects of this energy in extreme situations. If we are deprived of food for too long, our bodies won’t have enough energy left to perform physical tasks. If we don’t sleep for two days straight, we won’t have enough energy to partake in a meaningful conversation. Not eating, or not sleeping will drain us of our energy reserves. We all understand this because it’s common sense. [read]