State any two conditions essential for being free of disease.

Two extremely essential conditions for being disease free are:

Good Nutrition: There is no organism on the planet which can survive and stay in its healthy shape and size without the necessary, assigned nutrition value. Especially human beings can stay disease free if they adapt to a healthy, balanced nutrient rich diet along with appropriate hydration.

Rest and exercise: 8 hours of sleep and 45 minutes of daily exercise is the go-to lifestyle for being disease free.

Final Answer: Hence, nutrition and the right amount of exercise and sleep are 2 essential conditions for being disease free.