Exercise can greatly help with depression. When you exercise, your body starts to release endorphins that make you happy. Working towards your goal of getting in shape then becomes an enjoyable experience and puts a smile on your face. You have 2 options, you can stay in the chair and keep chugging down beer or soda, and start feeling bad, or, you can use your chair to work out, start eating healthy smoothies, greatly improving how you feel and getting a smug satisfaction when you start seeing results! In others words like Donovan said, smile, because it beats the alternative.