ABSTRACT

Since ancient times, one of the specific features of human beings (and some closely related animals) has attracted the attention of intelligent people. Machines and tools deteriorate with use; they wear out, loosen up, and generally become worse. The best machines are those that do not require repair for long periods of time. The situation with the “human machine” is the opposite. The longer a human participates in a certain activity, the better he or she performs it. A living organism not only does not deteriorate during work but, quite the opposite, becomes stronger, quicker, more enduring, more adroit and dexterous, particularly with respect to the type of activity that has been performed. This feature of living organisms has been termed exercisability.