What does it mean when your body is super tired and just wants to go to sleep?

It can mean ohh so many things: low on certain vitamins: low iron, low vitamin B. Could also mean you may not be getting quality sleep when, you are actually sleeping. Mind may be feeling super restless. Need to know other symptoms to pin point the root problem. Best bet is to go to the doctor, and get some blood tests done to narrow done any potential vitamin deficiencies.