The British Heart Foundation asked Twitter to help educate people that with more widespread CPR training, survival rates for heart attacks could be far higher. #RestartAHeart asked people to like a Tweet in order to see what might happen if they went into cardiac arrest. This triggered one of two responses. Less than one in ten people survived, the rest were informed that, because of a lack of CPR training, they had not survived. There were more than 47,000 global mentions of #RestartAHeart across a seven-day period with 4,000 people clicking through to a CPR training sign up page.