5 Reasons CM Punk Will Struggle In UFC
3. The Injury Bug

At thirty-six, injuries are a mounting concern for CM Punk - especially since he suffered several in his time in the WWE, including concussions that he discussed in his recent podcast appearance.
When you consider that an injury can easily take three to six months off a fighter's career, and you add on Punk's current age, there's a considerable concern that Punk may have limited time as a healthy fighter.