Are you suffering from muscle pain? These five simple tactics could help soothe sore muscles. Fish Oil: In recent research from Indiana University, participants who regularly took fish oil pills were found to have a lower likelihood of pain and sensitivity after completing strenuous workouts. The study lasted 30 days. The researchers divided the participants into two groups of 16 people and had each group take pills daily throughout the study period, with one group taking fish oil and the other taking a placebo.