Mick Foley opens up about some of the regrets he carries from his wrestling career:"When I was coming in, a concussion was something you shook off. Unless you were knocked out, it wasn't even considered a concussion. So I didn't put my hands up to block chairs. That was a mistake.The other one, Ariel, is that I shouldn't have been dropping those elbows off the ring apron onto the concrete unless there was a TV camera on. And even then, you could argue I shouldn't have been doing that.It's kind o