yeah i think i would have to warm up thoroughly before i sprinted with that contraption tied to my ass. just curious, how much weight did your friend use
or you ,when you used it? [/B] I am interested in the mass I could put on my upper back with some overhead ketel beel throws.
i would like to try that parachute sprint, looks like ther would be some definite resistance.
thanks for your input and would welcome more.