you have already waited a year. it is time to get it checked out by a medical professional. there can be literally hundreds of reasons so expect some basic blood tests for anemia low thyroid etc. to rule out any organic causes. there are so many different causes it would be impossible to solve this one-year dilemma blindly over the internet. you deserve a diagnostic work-up so make that appointment.
why am i always so exhausted? i'm 19. no matter how much sleep i get im always tired. i ware out easily doing the easiest things. i usually get about 8-10 hours of sleep sometimes i wake up and i won't be able to go back to sleep for 45min or so. but even if i don't wake up i'm always so tired. if i'm at college i'll come home and i'll be so tired my whole body aches. if i over do it and do a lot of exercise in a day i get really bad pains in my neck and back that will last a few days and go away. this has been happening for a year