Just fed up of it and looking for advice.
Late 40s and fit. I run, lift weights, do lots of outdoor activities, bootcamp, mountain climbing. I eat a good diet and am a size 8/10.
However every time I get a cold it goes to my chest and I get a terrible cough. Breathless etc…
I am teacher with three kids so am around lots of germs.
I’ve just been floored for the second time in 5 months. Feel terrible. No energy. Struggling to walk up the stairs. I worked this week but teaching (in a mask) was hard. Back in bed now.
I used to smoke. 20 years ago now. So I am worried I’ve damaged myself. 
Any advice? I just feel sad and sorry for myself.