When climates produce extreme heat, our bodies are left shorthanded

The body's ideal internal temperature is 36.9 degrees Celsius. As core temperatures rise, our internal regulation turns to acute self-preservation that leaves the body vulnerable in many ways. Symptoms of heatstroke set in above 40 degrees Celsius internally; the American Physician Journal recommends rapid cooling and, if done in a timely manner, it can be 100 per cent effective.