Have you ever heard of the term "minimum effective dose?" If you are in the healthcare industry, you most certainly have. That is where it is most commonly used, and for good reason.
The term is very straight forward— doctors prescribed the minimum effective dose when it comes to medication. If that amount is exceeded there can be adverse side effects. Think about it like this: why would you need more, anyway? If there is a prescription level that makes you feel better, then that is the perfect amount, right? If you feel better, then the medication has done its job. However, you can't double the dose and feel twice as good. Taking excessive medication won't make you feel better, it will make you feel worse. The thought, "more is better" does not apply here and never should.
That is how exercise needs to be approached, because in some respects, it is like a drug. There are extreme benefits, and adverse effects. Too much can get you injured, or even worse. In this modern-day world of exercise, this minimum effective dose approach needs to be practiced. This is especially true if you are just starting to focus on your fitness or you are looking to lose weight. You have to remove that "more is better" mindset and have a little patience, especially in the beginning. Exercise works, but it takes time. Becoming healthy just doesn't happen overnight.