It speeds up the metabolism so it can act as a fat burner.

But he argued the fat burner he took should not be on the banned list.

The substance was in a supplement that he bought as a fat burner from a combat magazine.

The 32-year-old said that he had mistakenly taken his wife's 'fat burner' product.

I still find it strange that some footballers would take these fat burners as they already burn calories in training and in matches.