Conjugated linoleic acid (CLA) is a fatty acid that can be found naturally in meats and dairy products. It is also a popular supplement among bodybuilders for various reasons.Several studies have shown CLA to have antioxidant properties, aid in muscle growth and to help reduce body fat.

A recent study further supports CLA’s fat-fighting properties even while you sleep. Subjects were provided with either 4 grams of CLA a day or a placebo (4 grams of safflower oil) for 6 months. The group taking CLA burned 43 kcal more than the placebo group during sleep. Additionally, subjects taking CLA lost on average 2.2 pounds of fat, while those taking the placebo gained a pound.

While these results may not seem that significant, competitive bodybuilders may want to include CLA into their pre-contest prep to help shed away those last few stubborn pounds of fat, which could mean all the difference from taking home the hardware or walking off stage empty handed.

Am J Clin Nutr. 2007 Sep; 86(3):797-804.