One of my students was asked by members of a"dojo" here in St.Catharines to come to their gym and help prepare some of their students for some upcoming competition by sparring with them.
He said no problem, he would like to help them, so he made the trip to their "dojo".
After some sparring sessions where maybe they did not make out as well as they thought they would, these "martial artists" informed my student his skills were ok, but if they wanted to they could kill him with one punch...by transferring their "internal energy" into him.
Maybe it's just me, maybe I missed the training sessions when they handed out all the deadly skillls of the "one punch kill".
I really feel for these guys that go around making these claims. Not so much for them, but for the students, especially the children and teens, that may take these guys at their word and think that they can actually do this.
But it must be hard going through life having to control yourself so much, just so you won't "kill anyone with that one punch". But like Peter Parker's Uncle said "With great power comes great responsibility".