Talk:Jeff the Killer/@comment-25214669-20140809100725/@comment-25306026-20140815000510

Actually, CPR can be fatal if you don't know the proper way to do it. That's why in some states it's illegal to administrate CPR without a license because the likeliness of it making the problem worse. You can send someone into cardiac arrest or break their ribs with one wrong press, instead of the intention of saving them. Just look it up. In a lot of gang fights, people fight unfairly and also try to do this intentionally by throwing their first punch into their opponents left chest area, in which the heart is normally located (I know someone whose heart is on their right which is a rare occurrence) for an easy kill. It's also a reason pro fighters and wrestlers go for the collarbone or atleast mid-torso instead of the general high chest area. As for the ribcage, a human punch can fracture or even break several ribs. Even just falling the wrong way on something can break a rib with enough force. The only thing that tells a human to stop from doing all this most of the time is pain. All they have to do is ignore the pain. Just like biting your finger, if you didn't have pain then it would be fairly easy to bite off your own finger. We're stronger than we think.