Gawd, I hope I'm still surfing at 76, much less being able to get out of bed or even alive. Turning 58 next month so thanks for the inspiration that it is possible.

I've been biking a lot and that has helped improve my knee strength. 3 years ago i had bad knees and have recovered with exercise. I use to run a ton, 5 miles a day, played ultimate and just abused my knees up to the age of 49. I'm lucky now that my knees are back 100 percent. I do not run anymore, just biking. Mountain biking and just got an ebike. The ebike is super easy on the knees and can go further. Also, have a stationary bike I use if can't bike.

I've been meaning to start a daily routine of pushups and popping up on my feet on dry land. This thread just inspired me to start. And, I reserve the right to look like a complete kook...as I am a complete kook!