I agree with everyone who responded. I felt massive when first started working out, like I couldn't move fast enough because there was so much of me to drag around. I felt that way because I was that way. I'm halfway to where i want to be so it's still somewhat of a struggle but nowhere near like when I started and was REALLY obese. Persistance pays off. Just remember, one of the beautiful things about working out at home is you don't have to worry about making a fool of yourself in a room full of much more coordinated, much more fit people. I mean, please, who among us hasn't chased a stability ball around the dining room? Just say to yourself "whatever" and keep trying. Everything takes awhile to "get." Do that and there will come a time when you won't believe you ever had trouble with that move or felt cumbersome and "heavy." Follow the really good suggestions here (like "think light" which really works) and you'll be a butterfly in good time. Just don't give up.