In case of heatwave

What to do in case of heatwave? First keep out of the heat by trying to plan one's day in a way allowing to stay out of the heat; it's important to avoid to get out during the hottest part of the day. Second stay cool : one must reduce heat coming from sunlight out of the windows kept closed. Third : drink regularly even if one is not thirsty avoiding tea, coffee and alcohols. Four : help others.