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olskool said..
Tried sailing a few weeks ago n ended up swimming 40min. Didn't have the strength to uphaul or waterstart...
Is this normal physical deterioration from laying around for past 5months??
I'm not an MD, but I think the deterioration is normal, if you indeed spent most of your time lying around.
A couple of years back, I had a similar 40 minute swim due to lack of fitness. I had just gotten over a bad cold that had lasted much longer than a normal cold, and did not have the strength to swim quickly enough after a crash, when the sail briefly landed on my old-school longboard. I tried for a few seconds, but was totally out of breath, and thought I'd have a heart attack if I kept trying. Fortunately, wind and chop were pushing me towards shore, and once my board arrived at the launch without me (nearly giving my wife a heart attack), the rescue efforts got underway. But that was after only perhaps 6-8 weeks of little physical activity.
I've seen physical deterioration more similar to yours, too. In the most dramatic case, that included a hospitalization of about 6 or 8 weeks, after which re-learning to walk was quite a struggle. But it eventually worked out, despite the person being a couple of decades older than you, and overall in quite poor health. So I think you have a very good chance of getting back to your former shape, but it will require time and work.
Regarding your blackout triggers, it is good that you have started to identify some. A close windsurfing friend of about your age started having blackouts a few years ago that left the medical specialists guessing. In the end, cutting his coffee consumption, which had been extremely high, did the trick. But another friend with a different medical issue ended up identifying multiple triggers that caused her symptoms - some food related, some exercise related, and some others. But it seems she has found most of the triggers now, and remains symptom-free if she avoids them all. Key for her was self-observation; diagnostic tests like CAT scans did not tell the doctors anything useful. Your case may be quite similar in this respect, even though the symptoms are different. So keep watching for possible triggers, avoid the ones you have identified, and start on working to get your fitness back. Good luck!