dx keto IF is a relatively new method used to lose weight. This method means that you can eat 'normally' for five days and that you can eat for two days (5: 2). Fasting means: daily a maximum of 500 kilocalories for women and a maximum of 600 kilocalories for men. For those who want to do things a little differently, there are other variants of IF. For example: you fast sixteen hours a day and you eat 'normal' for eight hours a day (16: 8). http://www.skiingsquirrel.com/