There’s a difference between being uncomfortable and being in pain.
It’s healthy to test the limits of one, but not the other.
If a training session is simply hard, that’s good.
If a training session leaves you injured or unable to move afterwards, that’s not.
Hopefully under the guidance of a good coach, you can learn how to walk the line between the two.
If you do find yourself in pain during or after a session, that is a learning moment.
Did I perform this movement incorrectly? Was I not ready to handle that much load? Do I have an imbalance that need to be corrected? Was I properly rested and warmed up?
Should you attack your minds’ resistance to complacency? Absolutely.
Should you attack your own body beyond what it’s truly capable of? Definitely not.
The Healthy Path 