I am a 42 yr old woman and experienced most of the same symptoms. The actual ‘positive’ Covid phase was nothing, just a couple sniffles and coughs. Highly active runner and gym enthusiast. My VO2 was 41. Post covid 2-3 weeks later could not breathe, severe tinnitus, irregular heartbeat. VO2 dropped to 23. This lasted months and contributed to a severe blood pressure problems. I live in a rural area where dr’s do not take homeopathic remedies seriously, so I took it upon myself to do my own research into long covid and medical studies. Water fasting had shown proven results to eliminate LC completely after 7 days so that’s what I did. I did a 3 day water fast, followed by a 3 day 24 hr fast, and then followed that with a 4 day water fast. (It was during my kids’ spring break so I had to eat one time a day with them for at least 3 days). It completely took away all my symptoms. I will say though though that I am not LC free. Every time I over stress myself by exercising too much or fast longer than 24 hrs my Long Covid death rattle comes back, but no heart issues and VO2 is still in the 40s. Stress is definitely a Long Covid trigger, but I can 100% tell you, If you want to get rid of the heart irregularities and cough do a water fast. Still experiencing tinnitus, hopefully will go away in the near future.