Weight loss and weight loss maintenance can be achieved through lifestyle changes such as a hypocaloric diet and increased physical activity. Hypocaloric diet alone as well as training alone can induce weight loss; however, the combination of these result in the greatest weight loss. Whereas a hypocaloric diet plays a major role in weight loss, physical activity seems to be of great importance during weight loss maintenance. In Denmark, there are private and public offers to achieve weight loss, but the focus on weight loss in the maintenance period after treatment is limited.