A ketogenic diet is not a diet that people can go on and off. It takes time for the body to adjust and enter the ketosis condition. The procedure? Depending on the body type, activity level, and diet, it can take anywhere from two to seven days. The quickest approach to enter ketosis is to exercise on an empty stomach, limit carbohydrate consumption and drink plenty of water. Keto Prime is an all-natural, non-GMO ketone solution that supports ketosis.