My age is 19 years female and 62 kg with 5 foot 2 inch height. I have dark circles and feel sunken my eyes sometimes. I feel tired if I work a little bit more aur be sitted for long hours and have back ache due to this. I sleep more than 9 hrs sometimes like 2 days in week for 12 hrs. I also feel anxiety and sadness sometimes without reason. I want to know that extra sleeping is due to obesity or anaemia or depression?