Yeah I was shocked to find that Im actually the opposite. Once I started eating a "better diet", when I go back to eating shit like chips and lots of carb- and sugar-laden foods, I feel like shit,  Im more likely to binge drink and snack on junk food or something. Im dizzy and sluggish and my mood is shitty. But if I eat a diet high in vegetables and dark greens, and drink mostly coffee and water and eat lean meat and vegetables and fruit (maybe some bread products Im not doing Keto), I feel a lot better. Maybe it's pride at being able to stick to a diet? Maybe it really does make a difference?