Physiologist Dr. Pracka: A cold shower before bed in a heatwave is a mistake

Physiologist Dr. Daria Pracka explains that difficulty sleeping during a heatwave stems from the body's need to lower its core temperature in order to fall asleep. A cold shower before bed is counterproductive as it stimulates the body; a lukewarm shower is better. She also recommends airing the bedroom at night, avoiding heavy meals in the evening and staying well hydrated throughout the day.