Yes!! I used an app called Waistline 2 years ago to keep myself on a brutal diet. I did < 1500 calories per day for 2 months. Lost 9kg. Came out with the same i

Yes!! I used an app called Waistline 2 years ago to keep myself on a brutal diet. I did < 1500 calories per day for 2 months. Lost 9kg. Came out with the same insight: the hassle of meticulously keeping track helps with the restraint.