I have bronchitcasis take Azithromycin daily 250 daily also have MAC. I play tennis 3-4 times a week plus do some free weights and I'm 66. Have been away for 7 weeks came back to tennis on Monday and got so over heated very light headed face was bright red. Everyone concerned iced me down. Since then I get dizzy and just bending over and break into a sweat doing anything. Did a small lesson on Friday no running just h hitting and was dripping wet. My body temp today was 96.6 think my lungs are not happy and effective me more. Been reading about pulmonary hyprotension