Stim Free Body Composition Support Essentials Aids Fat Loss Helps Increase Muscle Definition Dietary Supplement Conjugated Linoleic Acid - Reduce Body Fat Naturally Controlled scientific studies have suggested that supplementing with CLA supports maintaining lean muscle while reducing fat. CLA has been shown to enhance metabolic activity, thereby supporting those who supplement with CLA, exercise and follow a healthy lifestyle, to lose fat, and increase muscle mass naturally.