At Braga, we followed the advice in our guidebook and took an enforced rest day. We were now trekking at altitudes where the air is so thin that climbing too high, too fast could lead to acute mountain sickness (AMS), a potentially fatal affliction. A gradual ascent with rest days would improve our chances of making it over the Thorung La. This Buddhist chorten lies on the trail between Braga and Manang.