Fat burners are in fashion today. As what their name implies, they help in raising our metabolism so that our bodies can burn fat faster. There are lots of fat burners out in the market. Two of the most popular fat burners are pyruvate and L carnitine. Pyruvate burns fat as well as stimulates energy while L carnitine converts our fats in the body into energy. L carnitine could also Of course, like any other supplements or drug in the market, these products should be taken in moderation so as to prevent side effects