In this show we talked about heat-related illness including prickly heat, heat syncope, heat oedema, heat exhaustion and heat stroke.
We promised you a picture of heat rash: this is courtesy of Sentient Planet (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)%5D, via Wikimedia Commons:
Click the link above to listen again and learn about the difference between heat exhaustion and heat stroke.
Environment Canada does a great job of putting out hot weather warnings. Check the latest weather forecast here (and warnings will also be posted there when the humidex is high).
Pay attention to the warnings, especially if you are at higher risk of heat-related illness and modify or cancel planned physical activity, stay hydrated, wear appropriate attire, stay out of the heat if possible and consider acclimatization.