Beyond the above physiologic causes, environmental effects on the human body must be considered. Primarily, sweating is a major regulatory mechanism in temperature control and the inability to sweat will contribute to heat stroke. This, as previously noted, increase cardiac demand. There are three principle processes the body uses to deal with excess heat. They are convection, radiation and evaporation.
Convection is the process where the body is cooled by air movement.
At air temperatures of 95 degrees or more, this no longer works. Sweating is our last line of defense. Here are some ways you can protect yourself against heat stroke. The most obvious one is to avoid excess heat. Decrease your sun exposure and stay in the shade.