I was diagnosed with "hypermobility syndrome." 6 years ago.
I'm quite hypermobile but the key has been that the "syndrome" part has magically gone away on patches.
I've had to go up again to 75, despite having periods that are fairly monthly.
I do have hypothyroidism which I don't think helps - that's been going up and down a bit since my second child at 41 which I now think is peri related.
I seem to be needing less thyroxine so have been going a bit hyper. Which hasn't helped anything!
Yes to the sailor walk! Waking up as if I've done a round in a boxing ring when the previous day I did nothing! Only wearing soft trainers at work...
All this went on for years before hot flushes started!