Preparation, seasoned pilgrims say, begins weeks before the journey. Doctors recommend building stamina through regular walking, climbing stairs or light cardio exercises. Since mountain weather can change within minutes, carrying layered clothing, a waterproof jacket, gloves and sturdy trekking shoes is far more important than packing extra luggage. Drinking enough water, avoiding alcohol and smoking, and carrying prescribed medicines can also help reduce the chances of altitude-related problems.
