I'm always tired and wanna sleep, ill come home from school and fall asleep and then be awake for like 2 hours and go back to bed around 10-12 and still be tired (wake up at 7: 20am) and it's been like that for like 4 days and i'm still tired. maybe because been feeling a little down?

What is the main difference between trace elements and the main elements that make up the body? 1) main elements consist of heavier atoms. 2) trace elements are only needed in small amounts. 3) trace elements consist of heavier atoms. 4) main elements are only needed in small amounts.