9. Pain in the joints

Granted that this is more like a problem for us common folks, but even superheroes would be suffering from joint pain due to the huge amount of lifting that they do. Yes, you can have bulging muscles, but underneath it all, all you have is the same structural joint that is necessary for every human being to perform their daily duties. Spiderman, even though bitten by a spider, still retains the human features, thereby is definitely going to suffer from joint pain upon lifting extremely heavy weights.