So I posted here the other day that I've been getting periods of being out of breath. My lungs are usually open, there is no constriction. This always pops up a handful of hours after running or other endurance workout, in the middle of the night. I fainted two days ago when running as I just ran out of air. My running sensor showed that my heart was beating as always during exercise.
So, yesterday I felt out of breath for most of the day, with periods where I was fine. Around the evening I had to call 999 as I was not able to drive to R&E myself. Had just taken my minerals a while before that. 90 minutes later I was normal again. Tracing back the day it seems like I always felt fine about 90-120 minutes after having taken calcium. I loaded up on calcium and magnesium before going to bed, and when I woke up briefly around midnight I took another big sip of calcium - and I'm still feeling fine now as if nothing happened.
Ok, so calcium can cause muscle spasms. It's probably not related to a bronchospasm as my airways have always been open during such attack. Calcium is also necessary for a good pumping function of the heart. If panic is ruled out (I'm pretty certain of that) and hyperventilation (pretty certain as well) then this must be an issue of either gas exchange or blood, and related oxygen circulation.
I don't think just popping calcium can regulate blood pH levels well enough. Not sure if there are other possibilities for this. Thus a heart problem induced by low calcium? Calcium is apparently necessary for proper heart pumping. Why from cardio? Sweating seems to lower my magnesium levels, and I am dearly deficient at the moment. Maybe the same happens here too, even though it does not show up on serum calcium blood tests (I'm certain I'm Ca deficient as well though), if corrected for low albumin anyway (another unsolved issue). Is calcium stored in heart muscle fibres and used from there for proper heart functioning or is calcium from the blood used for it? And why do those problems usually pop up a few hours after the fact? Continuous sweating, or calcium is moved from bone and muscles stores to blood to replensih levels there (this does happen!) But fact is, looking back that calcium has temporarily cured my breathing issue before.
Any ideas or comments?