If Superman didn't pull his punch and hit you at full force, what would you experience? I mean besides a bad day. Well, Jake Roper says that you'd feel 190,000,000,000,000,000 joules impact your body. That would be like 2,800 times the power of the atomic bomb that destroyed Hiroshima.
Obviously such a punch would negatively impair your lifestyle. The temperature of such an impact would reach 143,999,999,999.540.3 °F. Roper says, "You'd be liquefied at the atomic level."
So don't tug on his cape.