Physical Therapy

So, I've started physical therapy for my back and all I have to say is...... I think physical therapists are all sadistic. Every time I would show that a certain exercise was really hurting, she would smile. What is that about? It reminds me of when Desi waxed my legs..... if I would yelp, she would get a big smile on her face. Sadists, the whole lot of them!!! :-)