I just went through this energy problem, I woke up feeling great, did exercise and about mid morning and the rest of the day I had no energy at all. I felt that I could close my eyes and sleep for hours.
Google vitamin B1 for addicts. I went and bought some and have been on them for 3 days now. I can say what a difference this has made for me. I have all kinds of energy. Certain types of abuse impair your body from processing carbs and other garbage in your system.
I can say it does work and will now be advancing to a B complex. Check into it anyway!