The sport of MMA continues to grow, and yet MMA is one of the largest, farthest reaching sports to not really have any universal regulation, at least in regards to when and how kids can participate in MMA. While most mma fans would assume that being a teen makes you eligible for MMA, in the same way a child could choose to enter the boxing ring or the kick-boxing ring at an early age, but the real question is what is too young, and what is too extreme for young kids. Some mma kids are starting as early as 4, and this video will make you debate the merits of it greatly. Here’s the video, ESPN’s Outside the lines: MMA for kids.