The answer is fats. You need protiens and water. Carbonhydrates are things like suger and starch. Carbonhydrates are your bodys main sorce of energy in a heathy balenced diet.
It depends on how much you have.
BMI between 18.5 to 24.9 is required to have optimal cardiorespiratory fitness because weight directly affects the cardiorespiratory fitness.
The answers to your question is 2, 3, and 5
