I was recently watching the mid-season finale of The Flash, and one notable event in that episode is that...
...Wells gets the crap kicked out of him by the Reverse Flash, and then ultimately reveals that he (maybe? possibly?) IS the Reverse Flash.
It's an awesome moment, but then I had a confusing thought:
We've been told again and again that Barry heals incredibly fast, so it's safe to assume the Reverse Flash does as well.
But given that,
...if Wells is the Reverse Flash, it's unlikely that the gang, especially Caitlin Snow the biologist, would fail to notice him healing more rapidly than normal. This means that either, A) Wells is not the Reverse Flash, or B) he has some way of slowing his healing down to normal levels.
This, of course, is impossible to determine on the show at this point, so I'm not even going to ask. But it raises the question: can the Flash turn his powers off? If he needed to not heal rapidly, such as to keep from giving away his identity, could he? If he was threatened with starvation, could he slow down his metabolism to normal human levels? Could he go even slower than normal human levels?
I'm fairly confident we haven't seen Barry deliberately slow down on the show, but is that something the Flash can do in other media? Or if not, is there some established way for him to hide his powers, equivalent to Superman using careful, precision control of his muscles to keep from breaking an attacker's hand if he's gut-punched as Clark Kent?