What Happened to the End of the World? Don't Disturb Me While I'm Playing with Iron!

[Apocalypse + System + Muscle Flow Cross-Push Flow + Decisive Killing + Funny] Lin Nuo, an iron-massaging fanatic, was trapped in a laboratory. In order to replenish his muscles, he ate a piece of meat and obtained the Devil Muscular Man System, which allows him to become infinitely stronger by masturbating. After breaking the door, he discovered that the doomsday was coming outside. There is no power, zombies are everywhere, alien beasts are rampant, social order has collapsed, and mankind is in danger! A large wave of zombies besieged the human stronghold. The stronghold ran out of ammunition, and a desperate call for help came from the loudspeaker: "That strong man on the hillside who was hammering iron! Come and save us! We are willing to share half of the supplies with you!" Lin Nuo held a huge dumbbell in his hand and performed seated curls meticulously. He replied without raising his head: "No rush, wait until I finish this set of 3,000 times!" "You want to take advantage of the situation? Don't even think about it! When the zombies break through the door, we will flush all the rice, flour, and protein powder into the toilet!" "What are you talking about?! Are you going to flush protein powder into the toilet?!" Lin Nuo, who was four meters tall, stood up like a mountain of meat. "Based on this alone, even God can't save you!" With a loud bang, the dumbbells that exceeded the speed of sound were like cannonballs, smashing the corpses into blood mist, blowing the cement wall of the stronghold into powder, and falling into the river. A fifteen-meter-tall muscular giant crawled out of the river. He touched the big bump on his head and asked, "I am the River God! Did you just throw a gold dumbbell, a silver dumbbell, or a copper dumbbell?" Lin Nuo smiled crookedly and said: "No, mine is an ordinary dumbbell with a golden hoop and neutron stars welded to both ends!"