Effectively, if you veer off a ketogenic diet then you will stop producing ketones for fuel, and be kicked out of ketosis. In addition, the combination of fat and carbohydrate together is not too far removed from the standard Western diet that we are trying to move away from when embarking on a ketogenic diet, and can result in body fat gain and increased blood sugar and insulin levels. If you are following this approach for fat loss or another health reason, it is recommended that you follow as closely as possible the principles that we outline in our Keto 101 guide and cheat sheet found at the bottom of the page. If following a ketogenic approach for performance, your ability to produce and use ketones is compromised when you add carbohydrate into the mix, making it harder for you to adapt to a higher fat approach and potentially compromising your progress.