I am trying to get it started but I can hurt my legs and back easily. Even if I stretch a small bit too much my calfs hurt a bit, even without walking.
I am 20 stone but not grossly overweight, around 22-24% BF, I have massive shoulders. (I have this build
http://www.matratz.com/wp-content/uploads/2008/11/bobby_lashley.jpg)
I did the treadmill for half an hour and it is alright, nothing aching, but would really like to give the "around de gaff" a go.