What is important when you want to build up your cycling endurance is to create an achievable training regime and build up the process so your stamina and strength increase over time. This way you avoid injuries and have much better success. There is nothing you cannot achieve if you are ready to work for it!
The ketogenic diet or as some people prefer to call it; the Keto diet or low-carb diet is about consuming a lot of protein and fats but fewer carbs. This diet makes the body send the fats that we consume to the liver, which later transforms it into energy to keep the body strong and active for a long time without feeling tired quickly.