Hi Materialsrme,

There have been several studies which prove that regular exercise helps with depression. When you exercise, your body releases endorphins which interact with the receptors in your brain and triggers a positive feeling in the body. For example, the feeling that follows a run or workout is often described as "euphoric." That feeling, known as a "runner's high," can be accompanied by a positive and energizing outlook.

Twice a day may be a little too much if you are excercising seven days a week. Your body needs time to recover and repair itself especially if you are weight lifting. When you lift weights, you are actually breaking down the muscle and so it needs at least 48 hours to repair itself. That's how increased muscle mass is attained. If you are working different muscle groups each day, then that's okay. Just don't work the same muscles every day.

I work out five days a week and like you, I find that my overall outlook is generally happier.

Congrats on your weight lost!