Visitors to Tibet should be prepared for the effects of high altitude, which can include symptoms like headaches, nausea, and fatigue. To prepare for high altitude, we recommend spending a few days in a lower-altitude location before traveling to Tibet. Visitors should also stay well-hydrated, avoid alcohol and cigarettes, and take it easy during their first few days in Tibet. Some visitors may also consider taking altitude medication, but we recommend consulting with a doctor before taking any medication.