Number 4 – what you wear to bed.
I am not a fan of pajamas, never was, and never will. My parents also never make me wear one as well, so I am not accustomed to it. What I wear to bed then the same clothes I wear after I take a bath. It is usually just simple pants and a t-shirt.
Sleeping should be comfortable and relaxing, so I always wear something simple and easy. I also rarely use a blanket as I prefer my body being exposed by the wind from the fan. So, that is it, the shortest post.