7. Abnormal breathing
When there is lack of adequate oxygen in the bloodstream, you may begin feeling like you are short of breath, which is the same way you may feel at a high altitude place. Some individuals experience this kind of situation as having difficulties in catching their breath, whereas others feel as if regardless of how deeply they attempt to breathe, they don’t feel the relief that comes with a rush of oxygen. You may begin to notice that you are breathing unusually fast, but this is simply because the rate of respiration increases as the body attempts to obtain sufficient air supply for vital organs.
