How to help your body cope in hot weather – CBC

Skin flushes, heart pounds and we breathe faster as body aims to cool itself

Jun 23, 2025

As people across Ontario, Quebec and major cities in the U.S. swelter under a June heat wave, medical experts are urging them to take precautions in the potentially deadly weather.

Much of Eastern Canada is dealing with extreme heat and humidity.

Matt Grinter, a meteorologist at the Weather Network based in Oakville, Ont., said Toronto’s Pearson airport broke the humidex record for June on Sunday, making it feel as hot as 46.3 C. The stretch of high temperatures is expected to last three days, Grinter said.

In summer 2021 in British Columbia, 619 deaths were attributed to a heat event, according to a B.C. coroner’s report. Many of the people who died had chronic health conditions, including schizophrenia, depression, substance use disorders, diabetes, heart disease and respiratory disease.

Read more: https://www.cbc.ca/news/health/heat-body-health-1.7568684