This is the correct answer. The example person is about 177cm and 110kg, i.e., a clearly fat person, trouble moving and likely some problems with breathing already. If he doesn&#x27;t have a metabolical disorder, with that amount of body mass, it should be _really_ easy for him to drop weight by reducing calorie intake -- just by not constantly eating or drinking. But since he&#x27;s used to eating like a pig, it&#x27;s not so easy. And I&#x27;m not saying this to mock him, it&#x27;s a fact of how his body has adapted to eating lots of calories.<p>A single Mars bar can contain the calorie count of half of a meal, which is why these people are not losing weight. After all, it&#x27;s just a Mars bar!