CPR with chest compressions? Because that’s what CPR is. If you mean breathing by itself, that isn’t CPR. Doing CPR for someone with a pulse is incredibly dange

CPR with chest compressions? Because that’s what CPR is. If you mean breathing by itself, that isn’t CPR. Doing CPR for someone with a pulse is incredibly dangerous and if you are doing it correctly, there will most likely be cracked ribs assuming you don’t induce cardiac arrest first. CPR for an hour with someone who’s heart is beating is a ultra-dangerous idea. You could cause severe heart damage. Perhaps you mean rescue breathing? Why the hell would “friends” do CPR for an hour and presumably not call an ambulance? Some friends. Good Samaritan laws wouldn’t protect you because a reasonable person might do rescue breathing but a reasonable person would also call an ambulance. Unless you are in a very rural area, a first-responder response to CPR in progress would never be an hour.