Cusco is 3,399 meters (11,152 feet) and Ollantaytambo is 2,792 m (9,160 ft). Many people do not live at altitude and when coming to Cusco for the first time, may feel the effects that the pressure difference creates on their bodies. Light headedness, short of breath, headaches are some of the symptoms felt during the first day or two upon arrival. We understand people may not have much time here and want to get as much done as possible with regards to sightseeing, but it is very important to take it easy and rest on your first day so as to adjust to the altitude more easily. Stay well hydrated throughout the journey of your trip.
Here in the highlands drinking Coca tea is great for mild symptoms of altitude. However, it is probably best to drink this during the day and not before you go to bed at night as this can act as a stimulant for some people.