I'm extremely unfit and out of shape. I'm not super super fat, but I've been almost sedentary for a couple years now, so running is really hard for me.
I really don't enjoy being out of breath and uncomfortable, so instead of e.g. running on the treadmill, I will power walk. I find that if I try to run I usually run out of breath and have to stop.
Lately I've been wondering how it is that I know that I'm working hard enough. I have no idea how fast I should be walking or cycling or whatever. I'm using a mix of the treadmill, stationary bike, elliptical and cross trainer. I feel that maybe you have to really push yourself and get sweating to be burning calories. Should I be getting to the point where I'm out of breath? Am I going to burn fat by power walking?
Sorry if this is a stupid question.