i agree that it is not always desirable to go out and run, particularly if the area you live in is not the most peaceful, or if you're in a densely populated urban setting.
jumping rope might make for a better alternative. that can be done anywhere with full range of motion
Better alternative for long term joint issues. I don't think it would necessarily be a better cardio burn, or after burn for that matter.
See sprinting is really the emulation of the activity our ancient ancestors partook in.
Stop, go, stop go. Etc.
Some would say that's what HIIT is. But I would counter by saying I think HIIT is too much.
I have seen guys who do this kind of exercise and they don't hold on to muscle well. Too much cardio is catabolic. Long, intense cardio is not muscle sparring, it is actually burning muscle instead of fat after a certain point.
Edited by TheFountain, 03 May 2014 - 04:51 AM.