“I feel fit,” “I’m out of practice,” “I’m uncomfortable”: these are concepts that are instinctively understood, but which in reality are not very precise because they have different meanings from person to person.
So the good shape of a dancer is not the same as that of a housewife. And that of a boxer is different from that of an office worker.
If health is the absence of disease, one could define physical “form” or “good condition”, Fitness, as the union between health and the ability to carry out daily activities well, with vivacity and vigor, without unnecessary efforts, to make the most of free time and to be able to face unexpected events and emergencies with the necessary energy. Taking charge of this good physical condition, or, in other words, of the body's energetic power, has a decisive importance in the prevention not only of cardiovascular or rheumatic diseases, but also of nervous disorders, overwork, stress and depression.