No they don't strap you down but they do watch you closely. In the us my experience has been that you share a room with one other person like a regular hospital unlike a regular hospital there are not curtains and the beds are different. You get blood pressure monitoring every morning. Three meals a day lis snacks. You see a doctor everyday, and can talk to someone.

If you are feeling suicidal please call someone, a friend a hotline or go to the ER.