If you are serious about what you wrote, I' d go see a DR real soon and get a complete physical. That sounds bad that you almost passed out, etc. Sometimes feeling sick and ill like that is a symptom of a heart attack or stroke, etc. No way should you ever feel like that going hunting. Seriously, go see a DR and start exercising.

Now, if you said you were huffing and puffing ans almost passed out on the way out of the woods dragging a nice 12 point, then I could understand!