Don't know, but these symptoms happen when hematocrit is high and do not when in normal range based on the same amount of exercise. I exercise and lift regularly. I have a standard routine. This is what I experience. I am sorry it does not fit your perception.
And BTW, perhaps you are right about something else contributing, and I do have co-morbidities, but the phenomenon is isolated to the cycle of high HCT. It seems other non HCT related causes would move independently from the HCT level.