Hi Yaurgen, I have a cousin in Goteburg and an uncle in Stockholm, my cousin is coming to visit me in America and someday I want to go visit her in Sweden (I hear it's expensive!)
Anyway, I read not long ago that there's really nothing wrong with working out in a fasted state (empty stomach) and I've been doing it for about 2 weeks. Today I woke up at 8 am and had a cup of tea, went to school, had two classes and got to the gym around 1pm, did 5x5 squats, 5x5 shoulder press, 1x5 deadlifts, 3xF chin-ups and 3 sets of 45 second planks on a medicine ball. I'm following the www.stronglifts.com regimen and the weight I'm doing is still low, they stress that even though I can lift a little heavier, they want you to start with an empty bar since weight gets added at every workout. Then I went to the track and did 10 sprints of about 15-20 seconds each. After that I felt energized enough to do "the bear" routine, it's a barbell high intensity interval training routine in which you do a deadlift into a hang clean, front squat, shoulder press, back squat, shoulder press then start over. 5 times is one set, you want to 5 sets of 5 and increasing the weight slowly after every set. I did it only 3 times because I was starting to get a little out of breath and I also realized maybe my quads would be yelling at me tomorrow if I pushed further. It's almost been an hour since my workout and I still haven't eaten the food I made. I'm just not hungry right now and the article I read said if you wait an hour the natural HGH in your body will keep burning fat, but if you eat right away, your insulin will kick in and HGH will go away.
Long story short: I almost never eat 4-5 hours before a workout (sometimes longer, like if I work out soon after waking up, it would be at least 8 hours without food) and I try to wait until an hour after, which is typically not hard to do.
It sounds like the work you do is demanding but not so much that you need to fuel up before going out there. I say don't worry about it, if you're not hungry don't eat.
I used to seriously post here, now I prefer to troll.