Thank you all for your comments and reviews. I purchased the mat dvd, although I haven’t started yet. Your posts have given me a boost and I am looking forward to doing this workout. I am middle-aged and was always pretty thin until I hit my 40’s and gained about 30 lbs. and…the arm thing just happened in the last year - yuck! I used to run and have all the dvd’s in the drawer that I used a couple of times and got tired of…You all have inspired me - keep posting!