A drop in air pressure and oxygen levels makes it harder to breathe at higher elevations.
The air in Tawang is not as rarified as in Sela, a mountain pass en route at 13,700 ft. or Bumla on the Tibetan border beyond at 15,200 ft. above the mean sea level.
But it is not unusual for one to gasp for breath while brisk walking or running in Tawang, the headquarters of the Tawang district and the most popular Buddhist destination in Arunachal Pradesh.
