Getting a good grip is the main problem. I don't notice the pain while exercising so much as later. And to be honest, the pain is constant. I've become accustomed to it. I just have no strength in my hands which is a nuisance and a danger when lifting weights. It is one of the reasons, I tend to use machines. If I were doing traditional bench presses and my hands cramped up so bad that I couldn't hang onto the bar. Well, I might not be around to talk about it. Fortunately, I've never dropped a weight while lifting. Still, the thought of doing so isn't inspirational. I have lost my grip using the power twister and nearly knocked my own teeth out. Not a fun experience.
Heck, I am 76 years old and I still workout most days. I am doing a lot better than many people my age so I shouldn't complain, right?
Yes, I hope I can do as well at your age. But you can go much further so don't throw in the towel.
I'm 62 and sometimes I feel like sh*t.
Check this out. Interesting. You can buy Boron supplements.
I've been taking Boron supplements in capsule form for awhile. I can't comment on whether they are effective or not.
My knees have been feeling good but who knows why.
Might be worth giving it a go. Borax itself is only toxic at high levels. It's not the same as Boric Acid used to kill ants.
20 Mule Team Borax is very pure Borax. Find it in the laundry detergent aisle.
https://www.life-enthusiast.com/articles/medical-borax-conspiracy/