And, on the other hand, there are the "health cranks," who declare vehemently that the name "cold" is a misnomer and a trap for people's thoughts. Cold has nothing to do with it, they say, and point to arctic explorers who frequently get frozen to death, but do not "catch cold" until they get back into the warm rooms of civilization. As for drafts, the "health cranks" aver that a draft is merely "fresh air moving"; which is supposed to settle the matter. However, when you come to think about it, you realize that a cyclone is likewise merely "fresh air moving," so you have not decided the question by a phrase. While I was writing these chapters on health I contracted a severe cold--which was a joke on me. The history of this cold is as clear in my mind as anything human can be, and it will serve for an illustration, showing how much truth the grandmothers have on their side, and how much the "health cranks" have. To begin with, I had been overworking. All sorts of appeals come to me; hundreds of people write me letters, and I cannot bear to leave them unanswered. I accepted calls to speak, and invitations where I had to eat a lot of stuff of which my reason disapproves; so one morning I woke up with a slight sore throat. I fasted all day, and by evening felt all right. But there came another call, and I consented to take a long automobile ride on a cold and rainy night, and when I got back home, after five or six hours, I was thoroughly chilled, and my "cold" came on during the night. This explanation will, I imagine, be satisfactory to all the grandmothers of the world. All the dear, good grandmothers know that an automobile ride on a cold, rainy night is enough to give any man "his death." But listen, grandmothers! I have lain out watching for deer all night in the late fall, with only a thin blanket to cover me, and gotten up so stiff with cold that I could hardly move; yet I did not "catch cold." When I was a youth, I have ridden a bicycle twenty miles to the beach in April, with snow on the ground, and plunged into the surf and swam, and then ridden home again. I have bathed in the sea when I had to run a quarter of a mile in a bathing suit along a frost-covered pier, and with an icy wind blowing through my bones; yet I never took cold from that, and never got anything but a feeling of exhilaration. So it must be that there is some reason why exposure causes colds at one time and not at another.