I heard of this HIIT losing fat rather than muscle. I used to do a lot of running in the summer and boy did I lose weight, AND muscle. I am trying to avoid muscle lose and only aim for fat lose. I read somewhere in this forum about HIIT and how itll help you lose the fat. I run on the treadmill, so if you can give me an example of HIIT using the treadmill i'd appreaciate it. I dont run outside to much considering that it's to cold. In the summer I'll start back outside, but for now I go to the gym and use their treadmill. I would like to lose the fat like anybody else.