I'm not so sure that exercise is all it's thought to be.
I think it could be that when someone is healthy and energetic, they feel like moving around and doing things. And when they're unhealthy or dealing with some health issue (such as a detox), or simply when they're not as energetic due to natural aging, they don't. So we look at those who exercise a lot and because, on average, they are healthier, we therefore assume that it's exercise that made them healthy. But I think it could be the other way around.
There are plenty of top level athletes who all of a sudden drop dead at 25-30 years old and not even during intense exercise. And there are plenty of couch potatoes who make it to their 80's and 90's.
I think when somebody feels very tired and fatigued, exercise is likely to only make things worse. Their body is telling them not to exercise unless they absolutely have to. Why would the body do this if not because it's the best for their health? Is it just trying to save calories, like most doctors and physical trainers believe? I don't know, somehow that doesn't make sense to me. When someone feels like exercising and they're kept still by outside forces, they start getting anxious and jittery. Why is this? Could it be because their bodies are telling them that it's time to move around and do things?
I've had times when I felt very energetic and lively and doing high intensity exercise felt really good, when pushing my muscles to the max released pleasure/happiness hormones or something. I've also had times when I felt very weak and tired and doing any sort of exercise seemed bad and like I really wished I didn't have to do that. Why is this?
Do you think it's a good idea to force yourself to exercise when you don't feel like it? Or to force yourself to be still when you want to exercise?