I came across this 3 minute workout on YouTube this morning (while searching for "abcentric exercises"). This routine was put together by a black belt Jiu-Jitsu coach from Boston. The guys in the video say it's perfect for burning fat. It looks INTENSE!
I wanna try it!! I know nothing beats a decent workout; but, for those days when I can't even spare 20mins, it would be great to fit in a 3min workout and still see/feel results.
I'm gonna do it this evening and report back.