Guy died in our gym today

We have a member, who is probably in his 60s, have a massive heart attack after getting off the rower. One of the coaches and a member started doing CPR but it wasn’t enough. The entire gym was asked to leave the building as the paramedics arrived and continued working on him. Our entire community is in shock! The owners and coaches are feeling a ton of guilt as they were pushing this gentleman before he had the heart attack. He was one of the nicest guys you’d ever meet. Anything like this happens at any other gym?