A 100-kg man wants to lose weight by increasing his energy consumption through exercise. He proposes to do this by climbing a 6-m staircase several times a day. His current food consumption provides him with an energy input of 4000 Calories/day. A Calorie (Cal) is a unit for measuring the energy released by food when oxidized in the body; 1 Cal = 1 kcal. Determine the vertical distance (m) the man must climb to convert his food intake into potential energy. What is your advice regarding exercise versus a reduced food intake to effect a weight loss?