Ben's growth progress

Ben is now 5'2", he is only 2" shorter than I am!!!!  He has grown 4" in the past year.  He is growing at around the 25th percentile, which would mean he'd end up around 5'7", which isn't bad at all.  He is also 105lbs, I won't say how much lighter than me he is!!!!  Of course, all his weight is in muscle.  Every time we go, the doctor comments on his physique, but he works hard on it, so what would you expect?