The Technique of Travel : Page 126
At times the party may need only stop for breath, each man leaning forward and supporting much of the weight of his pack on his poles.
Rests should not be too long. "The longer the rest, the harder the start."
Eating on the trail.—A skier can do no more on an empty stomach than a soldier. There are some, who, under the unaccustomed exertion of a ski climb, are famished to a point almost of illness after four hours without food. It is better to use food for energy than to rely upon stored energy in the body.
A mountaineer may often be using so much energy that he cannot, or at least should not, eat enough at conventional mealtimes to provide that energy. But he can eat oftener. Two lunches, of easily digested foods, can be the solution. Dextrose foods are quickly assimilated. Dried beef and fruits (in limited amounts) are good for munching along the trail. When possible, lunch places should be near some supply of liquid water; the more the skier drinks during the day, the less will he have to melt snow and use fuel when he makes camp. Furthermore, if he is not so thirsty at dinner time, he can use more space for the solid food he needs to restore energy and tissue.