these two are magnesium and chromium. Magnesium is involved in many processes especially in muscle function, nerve function and insulin metabolism. Its deficiency can cause problems including nerve twitching, irritability of nerves, muscle twitching, tiredness and fatigue .Diets that are rich in chromium are broccoli, chicken, turkey, beans and eggs, and green beans .Magnesium is in fact found in various foods like dairy, nuts, green leafy vegetables and meats.