Drink a minimum of 3 liters of water a day.Eat hygienic food. Don't stay outside of teahouses longtime. Use good clothes that warms up your body temperature Trek steadily. Don't try to skip the acclimatization days. Take a Diamox ( if any symptoms show up while strolling). Drink a lot of Garlic Soup and other soups. Don't try caffeinated, alcoholic, and smoking items.