It sucks when you get hurt.
One of the things I always worry about, is learning how to work with new people.
Some novices like to show off and do their end quicker, making it harder for the other person.
Some fight you for control as you're lifting.
It takes some time to develop some body communication for jobs.
If I do have soreness, "days" after the muscles should have healed, I consider my friend in the back business.