you just told him... :P

Nigel (ok so thats not your name but it was a long shot )

Scrap's saying its common for 16 year olds to get them... you're not physically matured yet and its an age where you are likely to be able to run hard enough to do that get that injury... on average a 16 year old's body has developed so much and its at this point you're most likely to get them...

Funnily enough I was 16 when I first got shin splints... so there you go :P
All hail Scrap