Hello Doctors, I am 30, 169 cms, 80Kg, Somewhat Obese on Belly, but my hands & legs are not that fat. I get period motivations to workout and I start working out. moderately, usually do brisk walking cycling or 10 count aerobics, many times I get some heaviness in my head after 10-12 min of workout, I get scared and then I leave it. that heaviness lasts 10-30 mins or even sometimes for 2 hrs. Can u help me how to avoid this heaviness in head & why I am getting this. I have had many tests before, and they were normal. i have slight cervical PIVD and Lumber L5 S1 PIVD also.