Man in Hot Environments

Abstract

There are broadly two situations in which a man is exposed to hot conditions. In the first, the individual is accustomed to living in a hot environment; he is in equilibrium with it and adapted to it. He may live in the desert or in a tropical country, or he may live in a temperate climate and yet spend a part of each day at high temperatures, as in the case of a foundry worker. In each of these cases he is routinely exposed to heat. The second situation is when the temperature rises from the equable, cool level associated with his usual surroundings, and to which he is accustomed, to a height that imposes severe demands on his thermoregulatory mechanisms to the degree that adaptation is necessary.