We need to stop thinking of ourselves as people, but rather as homosapiens. We are animals, nothing more, nothing less. Just like a leopard or an ostrich, no matter what form we take, our bodies all have the same fundamental principles.

Look at how we live vs how any other wild animal lives. Our lives are completely different purely because of the advancement of technology. Having such conveniences like supermarkets and endless entertainment behind a computer screen is ultimately our biggest inconvenience, as it is ruining our health, fitness and bodily function.

While exercise is great, it really should not exist. We should not have to perform structured, repetitive movements in order to stay healthy. Instead, as homosapiens, we should be behaving like we would as though we still need to hunt to live.

Exercise is great, and as you said, any exercise is better than none. But also, we just literally need to move more. We need to do more things ourselves, and rely on technology less when possible. It is unfortunate that the reality is, this has to be a gradual change. Instantly doing everything in a much more manual way would just overload our currently relatively frail bodies, and cause injuries. But if implemented in a gradual process over time, living this way would be much healthier than living as we currently do, while doing some exercise here and there.