You don't need a gym membership to melt that unwanted flab and look fit. In fact, you don't even need equipment. Use this super-simple body-weight workout from The Women's Health Big Book of Exercises to burn fat, tone every muscle and improve your fitness.
How do it: Perform this workout as a circuit, completing the prescribed number of repetitions of each exercise without resting. Once you've done one set of each exercise, rest for two minutes, then repeat the entire circuit one to two more times.