It is a misconception that carb-loading is the best way to prepare yourself for endurance exercise. Although an overabundance of carbs might give you an initial burst of energy, that surge can then lead to a sharp drop in your blood sugar-resulting in fatigue-later in your workout. This isn’t to say that you should eliminate all carbs from your diet, but endurance athletes will do better by consuming moderate amounts of nutrient-dense, unrefined carbohydrates, found in foods such as kale, spinach, broccoli, nuts, seeds and low glycaemic fruits to ensure a stable blood sugar throughout a workout.