Dress Dwon, Slim Dwon

To Burn kilojoules at work, take the stairs, not the lift, or hang up the phone and walk to your colleague's office.

Great advice, but when you're in an uncomfortable suit and tie or toe-crunching high heels, taking even one extra step can feel like climbing Everest. Dress less restrictively and you're more likely to move, according to a study at the University of Wisconsin.

They gave 53 people who work in banks, nursing homes, schools and bookshops a pedometer to track their activity. When the workers wore jeans or khakis, cotton shirts and comfortable shoes, they took about 500 more steps and burned more kilojoules than on dressier days.