It is also proven to promote new cell growth in the brain and have very positive impacts on the brain.

The problem with me is that I have worked construction my whole life as a plumber. I have mostly always been a foreman but still worked in the field along side the guys. I would be getting tons of exercise everyday. Up and down ladders, carrying heavy things up and down two flights of stairs all the time. Spreading water heaters and big cast iron tubs up stairs. Walking fast all over the place all day. Everyday too. When I was in high school I was in the most optimum shape possible. Running two mile a day, playing hockey everyday all winter, doing tons of push ups, sit ups, weights, stretching, all kinds of stuff.

None of that ever stopped me from going into a deep severe depression. It would just hit out of the blue.

It does help many times when I am in moderate to mild and can force myself to function. In that case it can snap me out of it. When I am severely depressed no way do I have the energy and motivation to exercise and when I do go for a walk it doesn't do any good. The depression is too powerful.