[svetliy]

m8,this is really scary stuff.maybe it has to do something with your blood sugar levels?once after the heavy day of freediving without any lunch running just on the glass of coke I had to do some heavy and intensive anaerobic exercises-I almost fainted afterwards. I felt so impossibly weak,that I fell asleep straight away. Was almost fainting. And also had tunnel vision and "tunnel" hearing, if i can say so. After few hours of sleep everything was gone. Next time I was in the same situation a glass of juice made me feel much better in an instant. So I do think I had very low levels of sugar.