Here's the secret to not losing muscle and strength as you get older
l made this post in the aging parents sub and l got banned for it. l personally don't see anything wrong with it, so if there's an issue, mods l would prefer a warning and correction, not a ban from nowhere.
I'm a certified geriatric medical doctor, and l also volunteer to take care of older patients in my free time. Just wanted to let you know that a lot of muscle loss and loss of strength is avoidable, and you can still be strong in your old age. I'm going to try to explain the analogy in the simplest way possible. Forgive me if it sounds dumb.
Our bodies are like a Lego castle, and muscles are made from protein Lego bricks. Our bodies need a constant reminder to keep those blocks together. When people get older, they usually stop lifting heavy things or challenging their bodies.
But without the hard work of pushing or pulling against weight, like doing squats out of a chair or using stretchy bands, the body thinks you don't need those muscles anymore and starts throwing the bricks away.
At the same time, older people need to eat more protein, because their bodies waste a lot of those proteins and do not turn them into the amino acids efficiently needed to make muscle. But you know, a lot of older people don't like protein-heavy meals; they prefer tea, toast, etc. Without new Lego bricks coming in from food, the body gets desperate for energy and actually tears down its own muscles to burn them as firewood just to stay alive.
So doing nothing will melt the muscle and make them weaker over time. To stop this, make sure you do some strength exercises; it doesn't have to be intensive, just enough to remind your body not to break down those muscles. Also, make sure you are eating enough easy-to-digest protein bricks every single day.
l hope this does not sound like a water-is-wet analogy. Feel free to ask questions, l will be happy to answer.