Physical Therapy

I have been going to physical therapy for a little bit now because my knee and hip have been bugging me. Most of the time I go after I get off work since it is about 2 minutes away and it seems to work out well. However, today I was exhausted. I was so busy last night at work and hardly got to sit down. My therapist even made a comment about me being tired. I think he may have went a little bit easy on me but it was still super hard. He kicks my butt every time. When he does the exercises to show me what to do they look so easy. But when I go to do them I think I'm dying. I guess you have to work hard to get better.