You must not watch too much boxing. That's his dad but trainers generally massage their fighters neck and shoulder muscles before, during, and after fights the same way you'll rub your own wounds and pains. His father knows his son neck hurts after being twisted and punched. We'd think boxers didn't feel any pain if someone didn't help them. On the flip side, these guys are professionals, they don't have to worry about getting little bitches like normal people. They have to reject bitches.