Good for you! Exercising really is the best mood enhancer, I've found. While I've never found any great passion for going to the gym, I do get addicted to jogging. I worked my way up to going on six mile runs, five days a week.

Now I've got a job in the city and commuting doesn't leave time for running. But strangely I've lost 15 lbs from walking around the city - and maybe from not having time to eat.