Young Indian Red Cross Society (IRCS) staff and volunteers found a new way to inform people how to prepare for heatwave temperatures that went well above 40°C in Delhi in June 2017. A unique five-day training and field experience – supported by the IFRC and Climate Centre – demonstrated that flash mobs are more eye-catching and effective than traditional ‘do’s and don’ts’ leaflets. The jingles and moves for the flash mob were jointly created by the group themselves. The messages: drink more water, keep your head covered, eat before you go out, and rest between noon and three. Theatre artist Dilip Shankar and Bharatnatyam dancer-cum-vocalist Radhika Kathal each spent two hours with the group, teaching them how to use their bodies and voices and helping to break down cultural and social barriers. Eight flash mobs were held over four days in different parts of Delhi, including the international; airport, while an estimated 1,600 people looked on.