It's bad for his health to avoid exercise.
Hope I helped :)
Hippocratic shock
is the asnwer and if not I think it is Neurogenic shock
Explanation:
When heat activates sweat glands, these glands bring that water, along with the body's salt, to the surface of the skin as sweat. Once on the surface, the water evaporates. Water evaporating from the skin cools the body, keeping its temperature in a healthy range.
Generally the Formative stage, being before the age of 5 years old.