Edit: due to all the sarcastic comments, I decided to add this opening comment as clarification:
Regular (or constant) activity is definitely good for you but maybe we don't really need to do dedicated, specialised exercises that increase the risk of injury, like jogging, long-distance cycling, and gym. Maybe just walking is sufficient to stay healthy.
Here is the original post:
Consider the following:
My grandpa didn't exercise once in his life. The closest he got to exercising was walking to the letterbox to check the mail. He did this once every 2 days, and it was a major expedition for him. His favourite book was called "Exercise is bad for you", it was always lying around on the coffee table. He was enormously overweight for most of his life, yet lived to the age of 88.
His wife, my grandmother, didn't even walk to the letterbox, and rarely left the house. She basically either potted around in the kitchen or sat on the sofa watching TV (not actually watching, just staring at it). In the last few years of her life, she had a glass of wine every night with dinner. She lived to the age of 93.
I have numerous unhealed injuries which are the result of exercise or strenuous activity. These include bad knees, one bad hip, bad lower back, 2 bad shoulders, and 1 weak foot. As a result of these injuries, I have much less flexibility, mobility and strength than my friends and relatives of similar age, who have been much less active than me throughout their lives. They are now much more active than me, due to injuring themselves far fewer times than I have.
My mother never engaged in regular exercise (no swimming, running or cycling or any sport) in her younger years, yet she is now extremely healthy and active for her age; she is far more flexible and mobile than me, and has never injured any of her joints.
I'm seeing more and more studies finding that intensive exercises is correlated with higher rates of cardiovascular disease or heart attack/stroke.
Keep in mind, I've always loved to exercise, and it has always been important to me and made me feel amazing. But over the years, my ability to exercise has become more and more limited due to injuries caused by exercising.
Pay no attention to the sarcastic comments mate. I don't think a lot of these people know too much about health or excercise.