Man, did 10 sets of 10 for leg extensions (knees have been sore lately)
and man oh man were my legs sore.
ALmost could not walk.
That was it just 10 sets of 10 for quads

....They were sore for 5 days
Did the same for rear delt too and those never get sore. They got sore doing 10 sets of 10. Last two sets I didnt get 10 and I didnt want to lower the weight so I took a bit more time between sets.
I was doing like 10 second rest.