I retired a couple of years ago and that has been my fountain of youth. I can sleep and rest as much as I want to, and I can work out as much as I need to. I'm physically better than I've been for probably the last ten years, but still I have osteoarthritis in my back, hips, and knees. I had a spinal fusion in my c4/5 a couple of years ago to deal with chronic injury from a lifetime of throwing and racquet sports. And I get hilariously stiff and walk really funny if I play more than a couple of hours of tennis a day.
As for elbows and wrist, I'm pretty good. I realized that as I got older, I tended to mis-hit more, especially on hard shots coming at me. So a long time ago, I started using oversized racquets and that has saved my arm. I religiously do resistance training so I can continue to swing a 355 gram, 348 swingweight racquet, which helps a lot since I mis-hit quite a bit.
I did play with my son tonight, after playing 90 minutes in the morning. I wasn't going to post this, but figure why not - it shows the worst of the worst. My son hasn't played in a week, and I also spread eight cubic yards of bark in the last two days. I started recording about 70 minutes in - the first clip is from when I first set the camera up, and the last, longer clip is the physical breakdown right as we got to the end of our 90 minutes of court time.
This was with the V-Square. I was sure it was going to break - I didn't use it this morning and really want to break it tonight so I could restring, but it amazingly lasted despite being so notched earlier. I never really hit any balls super hard like I did when I last played last time against the former college player. Anyhow, have some laughs at my expense.
About 70 minutes into our non-stop practice, when the body was starting to betray me. We were already missing quite a bit more by then, and the balls had lost their bounce:
And the total physical breakdown - the last 7.5 minutes of our 90 minute session. I couldn't hit a ball into the court to save my life: