I'm also using Eun's heavy muscle powder! I often go to the gym with my friends! No side effects! These are not hormones or drugs! These are all nutrients that our human body needs! Heavy muscle powder contains whey protein, as well as sufficient calories, rich carbohydrates and various vitamins and minerals, which is very helpful for gaining muscle and weight! Whey protein, if only supplemented with whey protein, the effect is not particularly obvious. Protein is also the main raw material of muscle, which has a certain weight gain effect, but its main function is to enhance immunity and improve physique. Creatine is an amino acid naturally produced by human body, which can rapidly increase muscle strength, promote new muscle growth, accelerate fatigue recovery and improve explosive power. The more creatine the human body stores, the stronger its strength and athletic ability.