i have a hard time getting deep breaths while riding my stationary bike.  afterwards i look awfully pale for ten minutes or so, ive been riding the bike for close to 6 months now.  i recently had an ekg, blood pressure and oxygen level tests, all of which were fine.  I should mention that i have really bad anxiety.  Thanks!
Thanks for your question on Chat Doctor. I can understand your concern. No need to worry about major heart and lung related diseases because your reports are normal. Stress and anxiety can also cause similar symptoms. Since you are having bad anxiety, better to consult psychiatrist as soon as possible. You will need counselling sessions. Try to identify stressor in your life and start working on its solution. You will also need anxiolytic Chat Doctor.  Don't worry, you will be alright with all these. Avoid stress and tension, be relaxed and calm. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.