To my fellow fat people: Don't be ashamed if someone elses warmup is your entire workout. Don't be ashamed if you can't hit that mile in 7 minutes or hit as many reps on the weights. Think about it this way, the stuff you're doing in the gym is exactly the same stuff fitter people are doing, except they'd be having to wear a 100lb.+ vest to do what you're doing in there. Doesn't that make you feel more confident about it? Of course it's harder for you, you might be carrying twice their weight on your body and you're STILL going hard!