I just thought of some more being out side helps because you can imagine staying inside does nothing for you for long periods. You get some much needed fresh air. It can relax you and give you much needed change of scene.

Other people may do things just beucase it takes their minds off life and makes them happy. We all need something that can give our minds a rest and sense of joy.

Other times it will mean doing things and going to places were you have to talking to people or small socializing again this then helps people build up skills and confidence to do these things.

Again this can go on with list of things and reasons as why people do them and what they get back by doing this.