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This! My grandmother adopted a dog late in her life. She walked 10km a day with that dog for nearly 20 years! (That dog was the oldest dog I've ever known). At 92 she was famous in my small village, she was in better shape than some of the 30 year olds! Then the dog died. Instead of walking 10km per day, she lay on the couch staring at the ceiling. About 3 months later she started getting lost on her way to the super…
I'm 63. I make a point of walking 5Km (3 miles), every morning. I'm usually out the door, by 0530, and back in about 50 minutes. I was running, but kept getting injured, so it switched to walking, several years ago. I think keeping my mind occupied is just as important. It's entirely possible that the visual stimulus of her walks was as important as the exercise. For myself, I make a point of constantly working on sh…
After the dog died she only talked to people if they came into her home.
I think the social aspect of her walks was very important for her health too. Like you say, it's all about exercising that noggin',as well as the body!