Unlike alpine skiing where you only make an activity on the descent, ski touring demands a very good physical condition in order to climb up and down the mountains. If you practice mountaineering, you already know the physical effort climbing mountains for hours can take. If you do not, you should prepare yourself for this activity with specific training.
If this is be your first ski touring experience, or you are not sure about your fitness level, let us know in order to offer you a positive experience skiing in El Chalten, Patagonia Argentina.