&gt; then I was definitely eating 4000+ calories per day and not getting Fat.<p>Not true at all, you weren&#x27;t even counting your calories you&#x27;re just throwing out a number. And if you were counting you were counting wrong. That&#x27;s a huge part of people who say they can&#x27;t gain or lose weight. They claim to eat these vast amount (or extremely low amount) of calories when they really have no idea. People trying to lose weight will look at a burger and say &quot;that&#x27;s about 400 calories&quot; and someone trying to gain weight will look at the same burger and say &quot;that&#x27;s about 1500 calories&quot;, when in reality its somewhere around 900. Do that for 3-4 meals a day and boom, you&#x27;ve got your &quot;I eat 4000+ calories and can&#x27;t gain weight&quot;.