Women who want to lose weight and keep it off need to exercise for almost an hour, five days a week, according to a new study.

Researchers found that a the 55-minute regime was the minimum needed to maintain a 10 percent drop in weight. Only a quarter of the 200 women involved in the study managed to lose this amount.

Research points to a combination of exercise and calorie control as having the best chance of success in weight loss. This latest research once again confirms that plenty of exercise is a key ingredient.