DD is definately less physically capable than DS. She's not as strong or flexible. When she was little she had ear issues though, so she did fall over alot more due to lack of balance. But DS1 is much more of a daredevil and now at almost 3, will do stupid things and take chances that DD won't and never did. She's got more sense than him, lol!! I am sure it will DS1 that I will be taking to hospital first for a broken arm or something like that, though we've gotten through almost 3yrs without a trip to the hospital for him, 4 if you include DD too!