text: losing abdominal fat ... tyres around my waist :(?   one of the biggest misconceptions is that doing sit ups will make you lose fat around your waste. not gonna happen.  a diet is the only thing to help that. now doing those sit ups is going to help burn fat. but so will the stepper or tread mill. cardo training along with a good diet is your best bet to burn off the fat.  i would recommend cutting calories, fat and carbs from your diet as much as possible. i had a chart cant find it, but if you look around on the net. you can find the right amount of calories to body weight to help you get a target of what you should be doing.