I do make it a point to exercise regularly. I had no workout regimen in my 40's. I retired at the age of 53. When I was 51 due to back trouble and being over weight I changed my daily eating habits and joined a gym. My weight is now what it should be and the back problems are a non issue. I work out at least 3 times a week and I now work for the gym. I work regularly with people in their 40's and 50's that are much worse off than I was and many think they can't do it. However I know of many that did do it and have improved their lives tremendously by choosing to get fit.
Being retired let's me have more flexibility about when I work out and when I work. I too stay away from running. Now it's easy walks on a treadmill and/or vigorous workouts on an elliptical machine or bicycle. I also do moderate resistance workoutsFigured I would start this since it is the first of the year... And pardon me if this has been discussed before...
Hobbyists: do you make it a point to exercise regularly? How does you "training regimen" compare to when you were in the 50s or 40s? Does/has retirement from the day-job made any difference to your workout routine?
Personally (thankfully) I still hit the gym several times a week (same as in decades past) although my running days are long over (knees & ankles).
Providers: do you see notable differences, on average, between us and the 50+ generation
I started when I came down with sciatica pain in my back, and the doctor sent me to a PT who gave me a fifteen regimen of stretching and calisthenics to do twice a day. Since doing so the pain never returned and I tend to keep trim and fit. Watching what I ear doesn't hurt either.
I will be 60 this year, and am diabetic. Since diabetes doesn't take the day off, neither do I. I walk 6 miles a day or so, along with some moderate weight lifting to keep fit.
Started when I was about 50. Had arthritis or some such in my shoulders. Been doing a combo of weight training and cardio ever since and no more real aches and pains. Also, the periodic back issues I previously had are non-existent now. Father Time keeps chasing me, but I'm going down fighting. And of course an occasional good body rub from one of the nice ladies to be found on TER doesn't hurt either.
I do make it a point to exercise regularly. I had no workout regimen in my 40's. I retired at the age of 53. When I was 51 due to back trouble and being over weight I changed my daily eating habits and joined a gym. My weight is now what it should be and the back problems are a non issue. I work out at least 3 times a week and I now work for the gym. I work regularly with people in their 40's and 50's that are much worse off than I was and many think they can't do it. However I know of many that did do it and have improved their lives tremendously by choosing to get fit.
Being retired let's me have more flexibility about when I work out and when I work. I too stay away from running. Now it's easy walks on a treadmill and/or vigorous workouts on an elliptical machine or bicycle. I also do moderate resistance workouts
I too concentrate on non-impact workouts; mostly ellipticals and reclining bicycles. Like others, I started developing back pain in my fifties (we are like horses, apparently) but managed & reduced it through weight loss and regular exercise.
Very happy to read these replies and to see that we have a "healthy" community; not just a bunch of old guys sitting around 
I am still (happily) employed and hope to continue for as long as I feel useful...
I go to the gym, do the elliptical, lift, and swim. Unfortunately, I don't do it as often or as regularly as I'd like to, but WTF, that's life.
Swim
try to go out 3-4 or more times a week with the various hiking clubs I belong too
Did about twelve miles today under difficult icy conditions, but the woods are my mecca
egin by standing on a comfortable surface, where you have plenty of room at each side. With a 5-lb potato bag in each hand, extend your arms straight out from your sides and hold them there as long as you can. Try to reach a full minute, and then relax. Each day you'll find that you can hold this position for just a bit longer. After a couple of weeks, move up to 10-lb potato bags. Then try 50-lb potato bags and then eventually try to get to where you can lift a 100-lb potato bag in each hand and hold your arms straight for more than a full minute. (I'm at this level.) After you feel confident at that level, put a potato in each bag.
I'm 64.. Literally every day Iget upand say that today I will walk a mile.. up the hill behind my house...and back.. and if I were retired.. I would be in such great shape..Work gets in the way..and then I don't... I forget to do it... damn..
You know of course I will be telling that to all the trainers next week. Damn that was funny!
Hobbying was the main motivation for me to start exercising. Keeping up with the ladies was something I wanted to do.
I ride my bike, about 3,000 miles per year.
It's working. A two hour fuck fest is my regular and recently had a four hour meeting where we went at is like bunnies for almost the entire time
HpHp,
I share you love the cycling and the associated benefits of fitness and a libido that has gotten stronger over time. Another benefit to cycling in drafting behind lovely ladies of all ages in lyrca. Now that is motivation.
I became a hobbyist in the last year and half and discovered my appetite and capacity is fantastic, similar to your experience. Remarkable discovery and I love paying attention to ladies in and out of the hobby.
Gents, if you want to increase your enjoyment and performance, get active. The short and long term benefits are amazing.
I have been lifting and running 2 to 3 times a week and am often told how good I look by women in and out of the hobby. I am 63 and am hornier than ever. I too have sessions that last 2, 3 and 4 hours . And for most of that time we are enjoying fantastic sex. Doesn't happen with every lady I see but if the chemistry is right. Well Yep.
I'm 67 and have always been active, running, bicycling, swimming (not all at the same time!) and going to the gym for some weight training. I also took up downhill skiing a few years ago. I couldn't feel better and contrast that to others who are my age moping around with too much weight and too little inactivity. I also enjoy seeing providers from time to time, but my interest has turned to massages and FBSM. I find I can relax a lot and enjoy my sexual experience a lot more without the pressure to have to "perform". Plus it's less expensive and safer than having to do the real thing. And there are some excellent providers out there!
Sonny's story with the potatoes reminds me of the dumb frenchman who wanted to impress the girls with his size so he was told to put a potato in his swim suit, except he managed to put the potato in the wrong end of his bathing suit. Others remember that one?
I prefer to enjoy the company of a mature man. As they have more stamina than most youngens. YES, from my experience it's true!
And most mature men have kept them selves in shape more so than the youngens. By biking, kayaking and MANY mature men I know in the hobby, have taken up Yoga and have found more energy and gained more stamina than before Yoga. And the results in their weight/body has been great.
SO if your going to take up exercise at any age. DO something that you'll enjoy and that won't be so mundane. And switch it up a bit.
And always love yourself no matter what you look like. (isn't this something we tell women all the time?)
Well the same applies to men. 
Have a great year!
Hobbyists: do you make it a point to exercise regularly? How does you "training regimen" compare to when you were in the 50s or 40s? Does/has retirement from the day-job made any difference to your workout routine?
Personally (thankfully) I still hit the gym several times a week (same as in decades past) although my running days are long over (knees & ankles).
Providers: do you see notable differences, on average, between us and the 50+ generation?
I've done marathons and I love Crossfit. I feel stronger than I have in years and I had a triple bypass last January.
Sean