21 Days Fitness Instant Dissolve Black Coffee 37.8g (21 Strips)Fitness enthusiasts and even fitness coaches recommend drinking black coffee before exercising as it can effectively improve the quality and efficiency of workouts. This is because caffeine in coffee can boost metabolism. Additionally, this group of people often frequent the gym and use larger capacity shaker cups. However, the instant coffee available on the market is either too weak or too acidic. The "21 Day Coffee" by FIFO Coffee is specially