On the "Essentials" thread, poster V. Simple had a variety of suggestions. The most interesting to me is to bring an oximeter to monitor how you are adjusting to life at altitude in the highlands. Quito is at 9350 feet above sea level, Cuenca about 8250.
As the name implies, this device measures the oxygen being used in the body.
Has anyone else used this device in Ecuador's highlands? What was your experience?
Do you also recommend it?
cccmedia