What is best way to keep sound health?

Lifestyle: Diet, exercise, water intake and sleep are the best ways to maintain optimal health. Make sure you are eating a diet high in fresh fruits, vegetables, whole grains and lean meats/fish. Exercise to raise your heart rate by 20-40bpm daily for 30 minutes, drink 3.5 liters of water daily and sleep a minimum of 8 hours. Avoid smoking, drugs, excess alcohol, junk food and sitting for long periods.