hey i plan on gettting a sled soon. i was wondering is sled dragging a good form of cardio? will it be ok to drag in the morning as soon as i get up as am cardio. would u recomend building my own or just buying the one on elitefts. and if i build my own waht to use for straps and harnesses and stuff. do you know any good sites for sled dragging. i found dave tates article on it and go ideas but its always good to know more. 
