Cut calories without noticing

Give your seat up on the bus

You might shift a few calories in the scrum to grab the last free seat on the bus or train - but standing up has its advantages, too. In fact, you'll burn off around 15 more calories an hour by standing tall and thinking slim than you will by sitting down and slouching. Need more persuading? According to scientists at the University of Missouri, the enzymes responsible for burning fat shut down whenever we sit.