Leonerdo said
Totally. Because, you know, moving normally in a world that moves in slow motion is a skill. If I trained hard enough, I can see everything in slow motion and run really fast. Thanks. Your insight is invaluable.
...I'm sorry, but I think we're working with a different set of definitions.
To me, 'muscle control' means knowing what you want your body to do, and then executing that action flawlessly. It doesn't grant your muscles the ability to move at ridiculous speeds; it allows you to have a steady hand, and it works within the limits of your body.
That is something that Mark pretty much has the hang of: he has plenty of time to fine tune his movements as they happen for him to have pretty good 'muscle control'.
His problem is that if he tries to move beyond the limits of a normal human, then his muscles will tear themselves to shreds. My first solution to that got rejected. Thats fair enough; I can see how an unknown like myself (my second RP) would not be the most trustworthy person to give a power that relies on limits to keep their character from being OP. So, my second proposition is that his muscles can just become very resistant to tearing by increasing how flexible they are, although now that I think about it, elasticity may be the better word.. That will allow him to move his body as fast as he wants without causing injury to himself, but stops him from being durable to anything else. As in the force of drag could rip the skin off of him if he doesn't keep himself at a manageable speed..