Once again, Leslie has not let me down. I started with the fast 2 mile walk for a few weeks and then tried the fast 3 mile. It really is a great workout! I feel motivated to move and it is fun. Once I get used to the 3 mile I am definitely going to try the 4 mile. Believe me, this is not something I would have thought I would have said. If you really want a workout, try this one!