It&#x27;s just a bad title.  The title should have been &quot;Why you shouldn&#x27;t exercise to lose weight without changing your diet&quot;. If you eat the same amount as you did before, assuming that was maintenance calories, you will lose weight if you begin exercising.  The problem is when you&#x27;re intaking 1500 more calories than necessary before you start exercising. You can&#x27;t burn that off to the point of a deficit with exercise alone.