In the movie The Hulk (The Mass) , the Marvel superhero shows off his spectacular physical strength, covered by fantastic special effects that allow him to even launch a tank into the air. Although without reaching these limits, in the real world there are incredible strongmen, like the Slovak Juraj Duri Barbaric , who in 1999 towed a train of 20 wagons with a load of one thousand tons along 4.5 meters with his hands.
Now, our muscle fibers have a limited capacity for concentration. For example, the quadriceps, which has up to 100 cm2 of muscle belly – the fleshy part of the muscle – can apply up to 400 kilograms of tension to the patella tendon. Only through genetic manipulation could this muscle power be discreetly improved .
