A few things can include taking a hot shower before bed, make sure you've completed everything you needed to do for the day, and go to bed on the right time, a bad habit would probably be staying up late to watch a movie or something
Answer:
I don't know but good luck :)
CO2 levels of the blood are elevated. CO2 is a acid
No I believe that anorexia is also influenced by our society where women/girls are expected or told that in order to be beautiful or popular you have to be skinny. This is causing so many woman/girls to go to extremes to be this way which includes Anorexia.