Core Nutritionals Core Burn PR Fat Burner is the next big thing in fat-burning supplements. A comprehensive thermogenic powder, Core Burn PR is formulated from industry-proven ingredients in dosages designed to metabolise fat cells and increase basal metabolic rate - so you’ll burn more calories overall, and a greater percentage of them from fat! Blended with slow-release caffeine for sustained energy throughout the day, Core Burn PR actually reduces hunger cravings and cortisol levels for easier dieting and a better mood.