So how does this work? A quick run-through: The first tip was to eat low carb. This is because a low-carb diet lowers your levels of the fat-storing hormone insulin, allowing your fat deposits to shrink and release their stored energy. This tends to cause you to want to consume fewer calories than you expend – without hunger – and lose weight. Several of the tips mentioned above are about fine-tuning your diet to better this effect.
Your body uses two primary nutrients for fuel: glucose and ketones. Most people use glucose for fuel; this is because the average person has a carbohydrate based diet. If you want to burn fat fast as hell, however, put your body into a state of ketosis. What this means is that your body’s primary source of energy is no longer carbohydrates, but fat. In other words, you’ll literally be burning your own fat supplies for energy.
In a way, moderate-intensity physical activity is that "magic pill" a lot of people are looking for, because the health benefits go beyond keeping your waistline trim: Not only can it reduce your risk of cancer, stroke, diabetes and heart attacks, but studies have shown that physical activity can significantly improve the moods of patients with major depressive disorders.