Poor guy! That stage is rough on them.
Our son who is 17 did not go through that stage, however our daughter who is nearly 13 is really really in that stage right now.
Our older daughter didn't go through that stage either.
However, they all complained of growing pains. Hips, knees, ankles.
Those big feet sure do trip them up.....along with the gangly long limbs and total uncoordination!!! Our oldest son (the one who is 17) and the nearly 13 year old daughter are both very athletic also. Oddly, the nearly 13 year old is the most athletic and she has had the most trouble with this stage. (she has bruises all over and gets new ones all the time)
LAB, your boy is growing up!!
Michelle