Things you find difficult as you get older

That's due to loss of estrogen.
It can be helped by doing weights 2 to 3 times a week and/or going on body identical HRT.

Past 50?

No!

Ask me about past 78 and that’s another matter.

(Not sure how the oestrogen loss applies to OP if he is indeed a Cumbrian Male)

50🤦🏼‍♀️
My energy and fitness was exactly the same as when I was in my 20s.
Late 70s was when mine started to decrease.

Ah, well spotted MawsRosie .
Maybe cod liver oil then!

From 50 to 65 I didn’t really feel that I was getting older, I was working and did most things I did when younger.
From my late 60s to my present age 77, I started to feel less able and noticed that my energy levels and my patience were becoming reduced. With arthritis strengthening its grip, my bladder losing its grip, and various other health problems taking their turn to stop me in my tracks from time to time I find quite a few things difficult. But I do walk, not too far with my DH because he wss disabled by a stroke and can’t go far, however, when he is resting I make sure I go for a longer quicker walk, sadly couldn’t do this during the heatwaves but am back to my routine now.