Diet and Exercise help contribute to both body health and mental health. Obviously both contribute to weight loss and changing your body image, but a lot of people neglect the psychological functions they perform. For example, exercise can make you feel more accomplished, or it can simply distract you from overthinking. Often psychiatrists recommend exercise to those who are feeling depressed. Being on a diet can also help you in all sorts of ways. As well as making your body healthier it makes you feel as if you are much healthier. This gives you an added confidence and helps you succeed.