I'm not saying I'd recommend it, but when I was doing a lot of yard work a few summers ago, taking some EC really helped me get a ton done without feeling tired or out of breath. Granted, I didn't get my heart rate up that high anyway, and it wasn't really "cardio" per se, but I could see why some people would like it. It seems easier to breathe, like you're getting more air/oxygen, for lack of a better way to describe it, besides the increased energy from EC, of course.Sorry to resurrect an old thread but I was surprised by the recommendations of ephedra pre-cardio. I did a quick search and there are a LOT of warnings about heart risk because ephedra increases heart rate and blood pressure -- combine that with a stressful workout and they say it could do some serious damage.
Thoughts?