I'm an overweight guy. I'm 185 Lbs and only 5 foot, 10 inches big. Not all of that is fat, some is muscle - I have more than an average person that does not work out.
Anyways, I am out of shape. I was playing basketball today, and I played a lot. Played 6 full court games in a row, totaling 2 hours of play non-stop except for a few water breaks, but I did not drink enough.
With about 10 minutes left, I began to feel dizzy and lightheaded....everything seemed a bit "Surreal". It's only when I look far-away.
I'm wondering what's up with this, and if it's serious or a one time thing. Here's some thing to consider when answering:
1) My eyes asre not perfect. After starting with a ridiculously high prescription for glasses, I went down to .50. However, my eye doctor, about a year ago, took me off lenses/contacts to see how my eyes respond. My lazy eye has started to come back, and my eyes have decreased a bit (Which was anticipated). I do not know if this plays a role
2) No sleep. I'm running on about 6 and a half hours
3) Stress. 2 Semester projects, a 10 page paper, a 6 page paper, 3 exams, 4 final exams, etc all in the next 2 weeks.
4) I also felt like throwing up a bit, and I was incredibly thirsty with a super dry mouth and throat.
It sounds to me that your blood sugar may have dropped. I know you said that you are a little over weight. Have you ever been checked for diabetes? Just a thought. If you are gennerally not very active and you put in a long session of physical activity, that could do it. Start off small and work your way up.