I'm on my feet all day 8 to 10 hours. I walk 5000, to 8000 steps a day. I'm a pricing auditor. My job is extremely mind taxing. I don't think it is physically hard, but my knees hurt after about 4 hours of up and down bending. I don't do anything to get my heart rate up. I have horses, I play with my two dogs everyday. I do laundry , clean house.