My 9 yr old son SWCAH was on the slim side until he was about 7 the last two years he has put on almost 30 lbs.  At 9 he is 91 lbs and is only 52 inches tall.   My non CAH daughter is 11 1/2 and is only 61 lbs.   He looks okay fully clothed but in the summer running around in his bathing suit is tough as we all know how kids can be.  He is very active so I can’t imagine what he would be like if he weren’t.  He plays soccer, baseball, roller blades, skate boards, is getting into lacrosse with the neighborhood kids.  He will be playing football come 8/1 throughout the fall so I’m really hoping he will slim down.  He also does the tread mill 20 mins morning and evening 5 days a week.  We took him off the lunch program at school this year and have really changed his eating habits, not that they were that bad previously.