I'm a good example of one that let age get to me. I got so slow and weak that I couldn't even aim my 12 gauge to take a shot. I started going to a weight trainer and he started me off with no weights at all, just some mobility exercises. And even that was work. But I've kept it up and I'm finally working out with 10 pound weights. He increases me by 2 1/2 pounds just about every other session. I can sure see the difference now but believe me it's work. So it can be done. I darn sure can't say it's fun either but definitely doable.
"A free people ought not only to be armed and disciplined, but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government." -- Unknown author -- Falsely attributed to George Washington --
Patriot Guard Rider