With fitness apps the press of a button on smartphone can help you record daily calorie consumption and exercise but they alone cannot motivate you enough to lose and maintain weight loss in the long term say researchers. In a 24-week behavioural study that combined traditional weight control intervention with smartphone-assisted helps researchers found that teenagers lost weight initially but could not maintain it when smartphones were the only tool helping them stay on track. Combining fitness apps with social support and accountability are the key the study said. We know that teenagers are on their phones which gives us