Physical activity burns calories. The body fat, chemical formula C60H120O6, we burn as fuel when we exercise is exhaled through the mouth as H2O and CO2. It is a complex biochemistry pathway but simply to burn fat we need to “huff and puff” more. Cardio-activity that increases heart rate and respiratory rate is effective in weight loss. To move is good to move more is better. Adding more movement to a sedentary lifestyle has benefits beyond burning calories. The immediate positive benefits of more activity are that you sleep better, think better and feel better.