Cold undoubtedly imparts vigor, and, according to DeThou, Henry III lost his effeminacy and love of pleasure in winter and reacquired a spirit of progress and reformation.
Zimmerman has remarked that in a rigorous winter the lubberly Hollander is like the gayest Frenchman.

Cold increases appetite, and Plutarch says Brutus experienced intense bulimia while in the mountains, barely escaping perishing.

With full rations the Greek soldiers under Xenophon suffered intense hunger as they traversed the snow-clad mountains of Armenia.
Beaupre remarks that those who have the misfortune to be buried under the snow perish less quickly than those who are exposed to the open air, his observations having been made during the retreat of the French army from Moscow.

In Russia it is curious to see fish frozen stiff, which, after transportation for great distances, return to life when plunged into cold water.
Sudden death from cold baths and cold drinks has been known for many centuries.

Mauriceau mentions death from cold baptism on the head, and Graseccus, Scaliger, Rush, Schenck, and Velschius mention deaths from cold drinks.