[IROC]

I would offer a word of caution. I was watching some youtube guy advising older people (like 50+) on the benefits of weight training (which I am a big fan of). This guy was over 50 himself and obviously was a gym rat. He told a story of hopping up and cranking out some pullups like he had hundreds of times before only this time, he tore a bicep muscle. His message was that "you're not 25 anymore" and you really need to take it easy.

I jumped down on the floor a few months ago to show one of my kids how to do a "proper" pushup and promptly tore/strained something in my neck/collarbone area. It took me months to get over that. And just a few short years ago (around 50 - I'm 58 now), I could easily crank out 45 "proper" pushups on demand.