My policy is that if it hurts him, he likely won't want to do it, so as long as he's chomping at the bit, i see no issues...
All...thanks for confirming my ideas...
Mythosgirl..."CONCLUSION: Accomplished adolescent climbers can now climb identical grades and compete against elite adult climbers aged up to and >40 years." I had to laugh at this...there only real competition is the elite of the elite adults...they'll pretty much destroy anyone else...hahahahah