I get a variety too im a martial arts instructor quite fit had all the test i feel mental cause they say im fine but sometimes i hospitalise myself with the fear of them but im starting to beat that now i would say anyone that gets them get em checked if there fine just live its like anything a persistant cough back ache knee ache or sneezing or coughing exercise is key keep the heart clean pure and it will look after you till your old try a good omega 3 supplement coupled with a good hydration throughout the day meditate or pray when you can calcium and magnesium supplements taken at different times oh and co q10 try it all it may help.
Blessings