Chest Pain

Generally not a good idea to give out medical advice without examination. Sounds like Costochondritis, not sure what the 'crack' was though, take some Ibuprofen and see your GP if you're worried.

"This condition is thought to be bost commonly due to repetitive microtrauma, or overuse."

That would be the excessive masturbation i guess.

I'll ride slow tonight and go in the morning...

What a pain!