Thanks, I think I wasn't breathing correctly.
I have to take frequent breaks because I get really dizzy and nauseous, so I'm not getting as much of a workout as I should.
I kept drinking water (about a cup and a half) but my mouth keeps drying out. I only alternated between level 1 and 2, and with frequent breaks, I know I wasn't working out too hard...
Does anyone know the cause and prevention for random nausea?