Q.F.
all children are flexible beyond belief from birth, some grow out of it, some don't. my daughter is still quite flexible and can do things you're mentioning and is 2....actually, before i messed my knee up (about 2 yrs ago, even while prego) I COULD do the same thing lol...like i said, sometimes they DON'T grow out of it. there are plenty of mommy and me places that do the gymnastics kind of classes and you just have to look at the age groups. some of them start at (i think) 6 months and up...some start 3 yrs and up (stuff harder like dance where you need to remember specifics). i guess it all depends on what you're looking for.