Fat metabolisers are products that assist your body's natural fat burning process without the stimulant ingredients that are found in many fat burning products. The most common types of fat metabolisers are green tea and carnitine.
Green Tea: green tea works primarily based on its abilty to have a thermogenic effect on your body. This is the heating up of your core body temperature which is a noticeable effect both during training and during non-training times. The heating up of your body temperature causes your body to burn through more calories. It is also worth noting here that a single serving of a green tea supplement or just one green tea pill can be as effective as up to 4 cups of green tea.
Carnitine: carnitine works by assisting your body's natural fat burning function by helping to transport fatty acids into your cells to be used as energy.