The Technique of Travel : Page 107
On the other hand, do not wear so much clothing that overheating results. This leads to perspiration, which brings about two undesirable conditions: (1) salt is lost through the pores, and the skier doesn't always remember to replace it in his food soon enough to prevent discomfort, or even mountain sickness; (2) clothing wet by perspiration becomes too good a conductor of heat, and, in the advent of low temperature, may speed the freezing of extremities.
A pace that is too rapid can similarly produce excessive sweating and the same two undesirable results, as well as tiring the skier.
Carrying skis.—Many tours start with a portage. Roads can be blocked for cars long before they are ski-able. There are several ways of carrying skis. It helps to vary the method of carrying.