Bummer

Delicate subject, this.  In the beginning of heavy training, it's bound to occur.
After that first century, the next morning, my friend Kris swaggered out with, "Don't worry...
once the wounds open up again, you'll be fine." (He was right.)
My friend Ed suggests that, "A sore bum can kill a ride." (Should I tell him that's not all it kills.)

And my friend Tracy tells us to slather up - early, and often.
Delicate, delicate subject.