Agreed...we work our mares the same way. It's not how much we work them, it's having (at least) some variety from day to day.Mine all like to work and will meet you at the gate when they see you coming. Does not matter how much I work them. However I change up what I do when I ride....
I also never work on the same thing 2 times in a row. If I work on turns one day I will work on rollbacks the next time. Some days I just lope the whole time. Some times I will do nothing but walk and let them stand. I have yet to have a arena sour horses or a barn or buddy sour horse.