We don’t recommend fasting while on the Cleanse. The herbs work in conjunction with the raw food diet and provide other benefits your body needs. The decision to fast while cleansing is yours to make. We highly suggest consuming food while do doing the Cleanse, your body needs nutrients in order for it to function properly. Contrary to what you may have read or the popular keto recipes online, the keto diet is possible on a plant-based vegan diet. It’s also important to know that there are a few variations of the keto diet, all of which can help bring your body into ketosis. While you are cleansing, you focus on eating raw fruits, vegetables, and raw nuts & seeds. If you want to maintain keto while cleansing, you’ll focus on fibrous vegetables and minimize fruit consumption. You can get a lot of your fats from avocados, avocado oil, olive oil, coconut oil, pumpkin seed oil, walnut oil, or macadamia nut oil. You can get protein from raw nuts, raw nut butters, and hemp seeds, flaxseeds, and chia seeds. As the focus of the keto diet isn’t what our focus is, it would be best for you to research thoroughly before trying a raw vegan keto diet.