Answer; You are right. Zinc plays an important role in the synthesis of testosterone. Magnesium is an important component of creatine kinase in muscle. Studies have shown that supplementation of 30 mg zinc and 450 mg magnesium every day can increase testosterone levels by 30%. Magnesium also helps to calm the human body and help sleep. High protein diet can affect the absorption of magnesium in intestine and promote the excretion of magnesium in kidney. Protein is an acidic food, and magnesium is weakly alkaline. protein is decomposed into amino acids and metabolic wastes in the body, which is acidic. It needs to consume alkaline nutrients to neutralize its toxicity, so as to maintain the normal alkaline environment in the body. Therefore, the more meat you eat, the more attention should be paid to supplementing magnesium. The reference intake (DRIs) of magnesium for adults is 350-400 mg/day, and the maximum daily intake is 700 mg. Any bodybuilder and athlete who wants to strengthen his strength, improve his performance and increase his muscles should consider supplementing ZMA. Many studies show that most athletes lack zinc, magnesium and vitamin B6. Previous studies have tested the effect of zinc loss in muscle on muscle function, and proved that the endurance or overall strength of muscle will drop sharply when zinc is seriously deficient. The degree of decline is related to the decrease of zinc concentration in plasma. So any strength trainer should eat it.