Low mood on the way down a mountain is often low blood sugar. What carbs, protein and fat do on a climb, how much to eat per hour, with sources.
A guide's own heart rate data on zone 2 training for mountaineering. Why every easy run was zone 3, what changed under 135 bpm, and how to use it for Orizaba.
The 12, 8 and 4 week training plans a Mexico City guide service sends its clients for Pico de Orizaba, Iztaccihuatl and Ajusco, with the science behind them and the one test that says you are ready.
Where to stay in Mexico City before climbing Pico de Orizaba or Iztaccihuatl: four neighbourhoods, specific hotels, and what actually matters when your pickup is at 4am.