I could swim independently (play in the pool etc) since I was 8, and ride a bike from before I went to school (so I'm guessing 5?). Wondering when you and your kids learned these skills? Being active is important to us, and when DD2 is earthside I want to get back on the bike to lose weight. DD1 can swim independently with a vest on and ride with training wheels, she is 3, but I think that is pretty early.