Is Mag10 beneficial for Track athletes? Also, do any of you guys use NO2, and if so, what do you think of it?
about no2, i've used it and it gives a nice pump, but if you call that a benifit (l kinda liked it) its the only one i saw. you can do a search as many people have asked the same question. it pretty much agreed on this board the stuff is no good, but i've heard more than one person swear by it.