These days it is really common for kids in grammar school to choose a sport to specialize in. And it's not just their parents choosing for them; the kids actually are self identifying and saying, "I love this sport and I want to do it." And it's increasingly common, because by the time they get to junior high or high school they've been specialized for so many years that a new kid cannot join a team. You know, if you haven't played baseball until you're 12 years old, you're not going to be able to join the school team, because the other kids are at such a high level. But the problem with this is that we find that there is a lot of overuse injury for kids. These kids are using the same joints and the same muscle groups over and over and over again, whereas when I was a kid and people changed sports with each season, we were using different muscle groups and different joints. If you only do one sport, the wear and tear is actually quite tremendous. So the sports doctors for kids have said the spike in surgeries - not just injuries, surgeries - for children is unbelievable. Their shoulders need to be repaired, their knees need to be repaired. Depending upon the sport and the intensity of the sport, you have kids who are really getting into adult-type problems, because they're practicing too much and they're playing too many games. So the best advice that I've heard is that a child who chooses to specialize in sport should really take three months off per year. What this means is nine months of intensive practice and play is fine, but three months should be an alternate sport. You still want to stay conditioned, you still want to stay healthy, but you want to use other joints and muscles, so that you don't have too much wear and tear on the same ones over and over and over again. And that's what I'll do with my kids.