The first thing you must do to navigate this quagmire of a situation is learn the difference between training and exercise, and then actually train! Most people do not distinguish between the two, and it’s an important distinction.

Muscle isn’t a costume you put on for show. It’s one of the most practical investments you can make in your health. More than that, it’s protection — against weakness, against fragility, against that creeping sense that life is getting harder than it used to be.