It's interesting timing that you mention this. I am going through a huge energy drain right now. Getting a full night's sleep helps, but today I noticed that the sun streaming through my car window while driving to work felt fantastic. I have to get more direct sunlight...

I take a vitamin supplement, esp. the B vitamins seem to help energy-wise. At work today they had the 5 hr energy drink people there giving out samples---could not come at a better time! Tastes nasty but I think it works. What a commercial THAT is? Tastes like @$$, but it works!!