I'm now 43 and facin gthis issue. I am about 25 lbs heavier than when I got married 20 years ago. Back then I played sports ll the time, ate like a bear, drank lots of beer. I now have a desk job, generally only eat a big meal at night(plus snacks during the day), don't drink much, the knee I injured in High School now bothers me way more than it did when i was younger and stronger.
I must admit the whole getting in better shape now is something i think about more and more, but is intimiating. I don't hunt sheep, nor do I expect to, but I like to walk in the fall, the last few years hunting has only been a few days at a time. My plan is to improve my diet(already started) start the walking thing(jogging is murder on my knees) and use a stairmaster my wife bought. Hopefully my overall fitness will improve, and I might even lose a little weight in the process.
The last few years I have found myself questioning my mortality more and more, I guess a sign of age.