Canadians are experiencing lingering health effects after a recent heatwave, with experts describing the phenomenon as a 'heat hangover.' The term, popularized on social media, refers to symptoms like fatigue, headaches, dizziness, and cognitive impairment that persist after extreme heat events.Toronto Public Health reported 39 heat-related emergency room visits during the heat alert period, with the highest number on July 2.Environment Canada maintains heat warnings across Ontario, Quebec, the Northwest Territories, and Newfoundland and Labrador.Dr.Steven Lin, emergency medicine chief at St.

Michael’s Hospital, explains that prolonged dehydration and electrolyte depletion from multiple hot days without proper rehydration cause these symptoms.The Canadian Centre for Occupational Health and Safety links heat exposure to concentration issues, memory problems, and emotional changes.Health Canada advises continued hydration, cooling measures, and checking on vulnerable populations.Experts compare recovery from a heatwave to recovering from intense exercise, emphasizing the need for proper nutrition and rest.