One Meal a Day fasting plan is just one of the many intermittent fasting regimes people are using to lose weight. It's also one of the simplest. You fast for 23 hour and in the free hour you can eat anything you want. Of course, healthy foods are encouraged. Many people combine the OMAD with eating programs such KETO. This fasting log is a handy way to visually see your fasting, sleeping and eating hours and keep you accountable.