Skip Breakfast Before Exercise
When we eat breakfast before exercising, our bodies use those carbohydrates as the primary source of energy instead of our stores of fat – this is the basis for the ketogenic diet. Like the keto diet, researchers found if we skip breakfast completely before working out, we have no calories to burn from a meal and our bodies must instead rely on internal carbohydrate stores, along with some of our fat.
To reach this conclusion, researchers studied a small group of men in a laboratory setting, monitoring precisely calorie intake and exercise.
The participants who ate oatmeal without working out had a daily energy surplus.
Those who ate and then worked out burned and consumed the same number of calories that day – essentially a net balance of zero.
And those who skipped breakfast were super hungry at lunch, but ended the day with a calorie deficit (after eating as much as they wanted).
This is great news! If we work out on an empty stomach, we have a reduced appetite later in the day, burning more fat and consuming fewer calories – this inevitably leads to weight loss when sustained as a habit.