Thanks. I am breaking it up. I use to walk 3 miles. Now I am down to 2 miles. I think your suggestion of doing it for shorter periods more often is probably the route I will have to take, the thing is i do most of my exercising at work, so I can't be taking a shower 4 or 5 times. I suppose I will need to start walking more at home so I can do it more often with shorter durations.