“Examples of such prescriptions include fasting or caloric restriction (e.g., 500 calories) on alternate days or 2 d each week, or forgoing breakfast and lunch

“Examples of such prescriptions include fasting or caloric restriction (e.g., 500 calories) on alternate days or 2 d each week, or forgoing breakfast and lunch several days each week” They do however state that there is no single prescription yet and that various timings should be studied further to find an optimum method.