Staying Awake without Cafeine

I'm a 22 year old male in school.  I am active(former college athlete), I eat healthy, get a good night sleep usually every night(8 hours). For some reason I wake up tired and continually am tired throughout the day with consistent but rare bursts of energy, and it's been like this for over a year.  I never drink caffeine and I am really trying to refrain from getting into a habit of needing caffeine to get through the day. Any suggestions to help me stay awake without caffeine? Or any suggestions as to why I am always so tired? Thank you.

[Renee Radenberg]

Suggest going to your MD and get blood work done to see if you have any mineral or vitamin deficiencies that maybe causing the fatigue.