Question: Hi doctor, I get tired and exhausted if I do excessive physical activity for more than say 10-20 mins. Ex: I can't run on say 9 speed for continuous 10 mins on treadmill. I feel dizzy and lightheaded. Same way, I can't do skipping more than around 80 jumps at one go. At times, I feel breathlessness and uneasiness/mild pain in upper parts of my chest. Every year, I undergo Master health check and attached are latest x-ray and pft reports. Let me know if I need to take any medicine/inhalers

Brief about my medical history: During monsoon time, I feel heaviness in my head, especially forehead, tiredness in eyes, drowsiness etc., Through the day, I operate in AC environment. I underwent FESS procedure 3yrs back and I can breath freely now but still face above mentioned issues. I use Alerflo nasal spray during monsoon and winter.
I'm 5.7height, 78kgs weight, 40inch waist size and I have GERD problem as well for which I'm on medication. Also I have moderate high cholesterol levels and grade 1 fatty liver. Otherwise, ECG, 2D echo tests are normal.

Thank you for your response doctor. I googled about HRCI, found that it is a CT test which involves high level of radiation. Is there MRI version of the test that I could go for