Exercise is very important. It is easy calories in, calories out. Overeating can lead to poor health, depression, as well as a slew of other health problems. When you are healthier and eat better your mood and health will be better and you will have more energy. Stay away from alcohol, which weakens self control, thus leading to out of control eating and snacking. You can splurge, but you need to do a little extra exercise the next few days to make up for it. Remember the calories you take in need to be burned off and always try and do the proper work outs.
Pilates and yoga are good exercise programs to engage in. Gyms offer classes, with instructors so you are sure to be doing it correctly. Going to a class also makes you more motivated and positive towards exercise. Other classes more focused toward cardiovascular health are also offered. At work, if you are sitting all day, take a physioball in, sit on that for a couple hours this will help strengthen your core muscles .