Does anyone know if just SITTING THE IN THE SAME ROOM can have an adverse affect on you?

Sometimes i feel like a hamster in a cage.. but i cant always go work at a cafe i mean sometiems people are loud they're distracting at the cafe.

I go out on the weekends sometimes but lately i dont have a lot of time.

Is sunlight and excercise enough?
I am thinking of getting a fit-desk. This cant be a bad thing right? http://fitdesk.net/

i am getting one for my birthday, hope the endorphins improve my brain function I really do, lately im extremely depressive x_x