So i went on a run today and started to get sick?! ....?

like i started to get really nauseus (sp?) when i was
running around the lake - this started about half way through (1.3 miles) and
then when i was about 2/3 of the way i just had to stop and when i stopped my
head started getting this achy feel and got really warm - does this mean that i
wasn't getting enough oxygen?

oh and about 30 min be4 my run i had a small frozen yogurt - could this have
caused my upset stomach?

i'm 18, 5'3 and 111 lbs if that helps any
sometimes you get nauseous (spelling correct :)) when you are pushing too hard.
It is oxygen related and will account for feeling sick. Do you normally do this
run at the pace you were running at or did you decide to go a harder this time?
bit odd if you are doing this run on a regular basis...
When your body is out of shape, you'll get nausiated from strenuous exercising.
Even when you're in shape, when you push yourself, that happens.

It could also just be lack of oxygen. If the yogurt was all you'd eaten, you
might just need to eat more. I know people think exercising on an empty stomach
burns more calories, but the opposite is actually true. Your body knows you're
working hard and if it doesn't feel properly fueled, it'll go into starvation
mode and hold onto all your calories. The result of this is a loss or burning of
muscle mass. That will make you feel dizzy and sick. Hope this helps. You can
check out http://betterhealthandfitness.webs.com for articles on exercise that
might help you out. Good luck!
Yeah just eat more and exercise a little more hope that helps