Man, burnout at 24??? That has to totally suck. I'm 10 years older and am in better shape now then when i was 24.
Look at your life and see what needs changing.
To much drinking?
Not enough sleep?
Could you possibly be sick, anemic, diabetic?
Depression could be a real problem here, but I'm just speculating.
2 weeks off should get the job done, especially at 24. If not something else is the culprit.
While i do agree test would make you feel much better, that's a slippery slope my friend.
At 24, that still kills me ha ha, you should NOT be feeling this way.