First off all, thank you Sidhe for pointing the thread.

When i saw the "Ask a doctor" thread it had quite a bit of spam

and i thought i should post later when it gets quieter and more serious as the thread starter wanted it to be.
Nanocyborgasm said:
Unless you work out supine, you won't be harmed by eating before working out.
Even if you do work out supine, you won't get nauseous, but, in theory, you could regurgitate food (very unlikely unless you have some strange esophageal dysmotility). However, you would feel heartburn and/or chest pain, or a funny taste in your mouth, not nausea.
(I had to check the dictionary to learn some new words.

)

The machine i was working on was actualy in a "semi-supine" stance like this "/"- about 45 degrees actually. So it might be this ... Since at this particular machine the nausea stoped me. I could/can "suck it up" but it is safer to know what it is first...
Like i said a few posts up, i did do less "head spinning" exercises the next time i went there. But i do those last anyways(before i go home), and i never felt nausea from them as directly as the other machine... only dizzyness.
Maybe i was pushing a bit to hard that time. I am rarely in the mood for gym. But when i am i don't stop easly. I have surges of energy, so maybe my heart could not switch to "overdrive" as fast as the muscles wanted to, so more blood got into the muscles and less to the brain ... (maybe)
(i am introverted, so i am usualy in a stoic,non-energic state. But i can channel energy from the hate within, and in some days i am a religious fanatic, so i can channel energy from that also. And in those 2 situations it just seems i can't feel my muscles' limits anymore, so i can go further).
Nanocyborgasm said:
I have a feeling this feeling of nausea has nothing to do with food. You may be experiencing a form of vasovagal attack. Do you get dizzy and/or nauseous and/or unusually sweaty when this happens? Vasovagal syncope is the technical term for fainting.
I don't get unusualy sweaty, but when i stand up i do get dizzy(in a which way is down way), but it only lasts a few seconds.
I found this in wikipedia (about vasovagal syncope):
Wiki said:
"It is triggered by a number of factors, including prolonged standing, alcohol, fatigue, hunger, and anxiety. Vasovagal syncope is caused by low heart rate and blood pressure, leading to inadequate circulation."
Prolongued standing -

Maybe, since i am quite busy usualy... but it would be strange to black out because of standing.

Alcohol, hunger and anxiety- None of these
Fatigue - i don't do many(if any) fatigue draining exercises.
Low heart rate - i doubt it
Low blood pressure- maybe

, i do recall that every time i had my blood pressure measured i had strange results. I recall only getting "Almost below the limit" or "Almost above the limit".
Also, i should say that i never blacked-out from anything (thank god).
I really apreciate your help Nanocyborgasm, i am sure most ppl here apreciate it too. It is good to hear some profesional opinions.
There are very few usefull threads in OT, yours is one of them.

(now if only those spammers would go away...

)
EDIT:
@capslock: i do have breathing problems on some ocasions, but it is strange that i never felt i don't have enough air at the gym.
I know several exercises are impossible without proper breathing, but i got the hang of it eventualy. (in the days when i was a noob

)