It takes about 8 days for the body to fully adjust to high altitude. Return to a lower altitude if the symptoms do not go away. Rare but serious problems may occur when progressing too fast from your normal altitude to a higher one. Watch for extreme shortness of breath, rapid breathing and pulse, and weakness. Chest pain, severe headache, and confusion may require immediate medical care.
Fit people are less likely to feel the effects of higher altitudes.
Train lightly when first relocating to higher altitudes. Allow your body several days to adapt to the new altitude. Take time to rest. Drink plenty of fluids. Return to a lower altitude if symptoms occur and do not improve.