I'm 65, been lifting since 1974, luckily I didn't fuck myself up by doing years of heavy squats, dead or benchs. I switched to a combination of calisthenics and lighter weights in my early 50s, it really helped, I highly recommend it. No hrt,trt,juice or growth hormone...don't need it (yet). I've been watching alot of training videos by a guy named Mike Van Wyck, he's a big proponent of bringing that weight down and using better form. I wish my younger self could have trained like that..but I think every young muscle head back in the day was convinced that More weight on the bar is better.