That's the thing, I stay pretty consistent with everything I do, the things I eat, but my energy levels always fluctuate for some reason.
I usually have a glass of water with breakfast to help with digestion, breakfast is either a piece of wheat bread with peanut butter and a banana, or an packet of oatmeal with a banana or some other kind of fruit. Wait an hour or two, go run, I usually try to do at least one mile every time I go, that's with a .5 mile walk to the track, mile run, .5 mile walk back. Usually takes 45 minutes - 1 hour. I also do some push ups and sit ups before I leave (25), 25 more when I get there before I run and sit ups or leg lifts, 25 more after the 2nd lap (.5 mile) plus another set of sit ups or leg lifts, 2 more laps, 25/25, done. It's a pretty good workout, I'm usually pretty exhausted towards the end, sometimes I can go longer and faster, other times I can't even run 4 laps. It's weird. I try to eat as healthy as possible, avoid excessive sugar/salt, highly processed foods, etc.