> Try doing endurance exercise without any carbs, and you are going to have a really bad time. I prefer to only do my endurance exercises in a fasted state, an

> Try doing endurance exercise without any carbs, and you are going to have a really bad time. I prefer to only do my endurance exercises in a fasted state, anywhere between 12-24 hours. The only thing i ingest is some salt, magnesium and potassium and water. I have no problem and I feel great. 30 minutes on the bike with resistence turned up or jogging 2-3 miles. Ketones burn cleaner than glucose with less reactive byproducts. There is a study on pubmed that found when the brain has the choice between glucose and ketones in the bloodstream it chooses ketones. You don't need dietary carbs, your body can make its own glucose from proteins if it needs. There's plenty of research on this.