Myelin increases around nerve cells when you learn skills such as the gold swing, squatting, juggling or riding a bike. Skill practice works in part because of increased myelin. Omega-3 fatty acids can increase the myelin content of motor nerves and improve motor skills performance, according to a University of Toronto study led by Evan Lewis. The study showed that supplementing Omega-3 fatty acids for three weeks increased muscle activation and reduced fatigue during high – intensity exercise and maximal squatting.