Interestng to read that ther older you get you get pains and niggles etc
I found the opposite with weight training, all my painful wrists, aching backs, feeling old and aching etc all dissapeared as i strengthened the muscles that support my joints as well as minimizing sugar which is a very toxic substance in terms of F***ing up your insulin and causing inflammatory processes, as long as you don't try to be a hero, learnt the right technique first , how to perform the lifts, and concentrate almost exclusivley on compound movements, squads, deadlifts , incline bench press if poss, and pull ups
Say it again, first thing is your diet, i'd go as far to say it's 75%, millions of people make the mistake of eating **** and training, it's a staggering waste of time
Keeping the weight down definitely helps to reduce injury/niggles.