Water
When the body is dehydrated, cortisol levels can increase. Therefore, drinking enough water would be effective in regulating cortisol and reduce stress. This is especially important for athletes and those people who are physically active. Ideally, a healthy adult should consume at least two liters of water on a daily basis. Depending on your gender, age, and physical level, the amount should be higher. Avoid high-sugar and high-calorie drinks because they can actually do more harm than good.[10]
