How many hours of your life do you spend indoors? For many people it is almost all of it.

Today’s video was created by The Velux Group, a company that manufactures skylights. In this video (which reads almost like a commercial) the narrator explains the transitions we have made from nature to an indoor environment.

The downsides of living a life within walls include sickness and depression. Centuries of technological advancement afford us the luxury of remaining indoors, but we should also remember that a world exists out there. Get outside.