Keto Plus The last one to be discussed is the Detox Diet. This diet involves fasting. Dieters can either choose to go on a liquid fast or to go on a fruit and vegetable fast. The fruit and vegetable fast is more popular because it does not involve total negligence of solid food. It is recommended though to go on a short liquid fast after the fruit fast in order for the body to really detoxify. Detoxification helps the body to get rid of the toxins that has accumulated in the bloodstream.