I think partly the reason why I manage this is due to my intermittent fasting. I first discovered this when I was doing water fasting, when you kick into ketosis and your body runs on fat. Because fat contains double the amount of energy than carbs per gram, you get a major boost in energy. Also carbs tend to be more of a short explosive energy, ideal for athletic activities like sport, where as fat tends to be a longer consistent release of energy for endurance. You don't crash on it, which makes sense if you consider that ketosis is intended to be a survival mode. But it's great none the less, I'm not really a sporty type of person, so one meal a day, high fat diet really allows me to endure long hours, and I can't fail to emphasise that the brain, which takes up 25‰ of your energy budget, actually runs alot more efficient on ketones from fat than the glucose from carbs.
