The supplement carnitine has been a fat burner for years, as well as a potent nitric oxide booster. New research shows that it has one more hidden ability to help you through your workouts–increasing muscle endurance. Researchers from the United Kingdom gave subjects either 2 grams of L-carnitine L-tartrate twice per day or a placebo for 24 weeks.
The subjects taking carnitine were able to cycle on a stationary bike for 25% longer. The researchers concluded that this was due to the fact that the subjects burned 50% more fat and 50% less muscle glycogen during the workouts. TAKE THIS: Boost your fat-burning potential during cardio by about half simply by taking 2 grams of carnitine, such as L-carnitine L-tartrate, with your pre- and postworkout meals.
via MF Hers