well.
Came a day when I had just turned 50 I noticed I was havin trubble makin out a speed limit sign (!!) until I got failry close to it.
Been wearing tri-focals ever since when I am not in front of a computer.
Distance vision is blurred without 'em, and for the ridiculously fine print I run into here an there they help a lot.
As for stiff .. well .. if I dont move it, it doesn't take long to lose the ability to move it.
The last 3 years as a Nurse in direct patient care helped a lot ..even had a few comments about how 'strong' I was for my age,
..now after a year out of work and just starting in a desk job again, I walk as much as I can (park on upper floor of garage and walk up the ramps to get there every day ..useda be tuff to do, out of breath an all, now .. it's cake.
I have bone spurs in my shoulders and neck, range of motion sucks, right shoulder gives me trouble now and then, was taken by surprise the other day when I could not 'parade rest' ..my right arm would not do the deed ..so now I am doin range of motion before bedtime about every other day.
Comes down to use it or lose it

I will be 60 soon .. .life will be over I hear ..course I have heard that about every milestone since 20

-GE