11. Try Not to Smoke
If you are a smoker, then this can make your gaining weight process more difficult than it should be. Smoking can really spoil your appetite and if you can’t eat enough, you can’t gain weight. Try quitting this habit or at least try to avoid smoking before every meal. In this way, you will eat more. Now, let’s see what’s next on our list of easiest ways to gain weight fast for skinny people.