Hi! My twin boys are 8 almost 9 (in Dec) and they have gone from a size 8 to a size 14 pant. They gained 10 pounds from there March appt to Sept appointment. I was VERY concerned about being undersurpressed, but the DR said everything is normal. I tend to think after your posting that this is the age of good growth. They are 92 and 87 lbs each. Very active in every sport, eating me out of house and home!!! KB