Students use cardiopulmonary resuscitation (CPR) dummies as they learn the emergency procedure during the mass CPR campaign demonstration at the University of the East in Manila, the Philippines, July 31, 2019. Around 4,000 students participated in the mass CPR campaign demonstration organized by the Philippine Red Cross which aims to have a first aider in every household and workplace in the country. (Xinhua/Rouelle Umali)

A student uses a cardiopulmonary resuscitation (CPR) dummy to learn the emergency procedure during the mass CPR campaign demonstration at the University of the East in Manila, the Philippines, July 31, 2019. Around 4,000 students participated in the mass CPR campaign demonstration organized by the Philippine Red Cross which aims to have a first aider in every household and workplace in the country. (Xinhua/Rouelle Umali)

Students use cardiopulmonary resuscitation (CPR) dummies as they learn the emergency procedure during the mass CPR campaign demonstration at the University of the East in Manila, the Philippines, July 31, 2019. Around 4,000 students participated in the mass CPR campaign demonstration organized by the Philippine Red Cross which aims to have a first aider in every household and workplace in the country. (Xinhua/Rouelle Umali)

Students use cardiopulmonary resuscitation (CPR) dummies as they learn the emergency procedure during the mass CPR campaign demonstration at the University of the East in Manila, the Philippines, July 31, 2019. Around 4,000 students participated in the mass CPR campaign demonstration organized by the Philippine Red Cross which aims to have a first aider in every household and workplace in the country. (Xinhua/Rouelle Umali)

Students use cardiopulmonary resuscitation (CPR) dummies as they learn the emergency procedure during the mass CPR campaign demonstration at the University of the East in Manila, the Philippines, July 31, 2019. Around 4,000 students participated in the mass CPR campaign demonstration organized by the Philippine Red Cross which aims to have a first aider in every household and workplace in the country. (Xinhua/Rouelle Umali)