I think it's extremely hard to beat wrestling for kids that age. I started my son at age 5 in youth wrestling in Northern Virginia and the programs there were awesome. We've since moved back down to Georgia, he's going on 9 now with 4 years of experience under his belt, and he's an absolute beast against kids his age. I've been really impressed at what the sport has done for his mental and physical toughness. I've asked him if he was nervous from pressure during other endeavors in his life: swim meets, soccer games, school tests, etc and his response is always, "no, this is nothing compared to a wrestling match."