Thermal stress is the accumulation of heat in the body that prevents a human being from maintaining a normal body temperature. Thermal stress can cause 2 to 5% mortality among the general population.
A healthy human body maintains a constant body temperature of about 37°C. A fluctuation of less than 1°C depending on the time of day, the level of physical activity is acceptable by the human body.
In contrast, a change of more than 1°C in body temperature occurs only in case of illness or when the body is unable to withstand environmental conditions, such as extreme heat.
Bodily reactions
As the ambient temperature increases, body temperature tends to increase. The body goes into reaction mode by increasing blood flow and making the sweat glands work. Thus, the body increases the rate at which it loses heat to reduce its thermal burden.
In very severe heat conditions, the heat gain exceeds the loss the body can manage. This poses serious health risks.
Ouranos, a consortium focused on regional climatology and climate change adaptation, predicts that the number of days per year where the mercury would exceed 30 degrees Celsius could quadruple in parts of Quebec by 2070.
BLISLY offers a solution!
If the hottest days are behind us for now, summer is not over.
Over the coming, the mercury will still rise beyond 30° in southern Quebec. It will feel like 38°. Temperatures like that have a definite influence on everyone’s health. In particular, the most fragile people, older and already sick, as most at risk.
The free Blisly App anticipates your symptoms in relation to the hot weather. The comfort index allows you to plan and adapt your activities according to the expected heat.