Let your arms do some of the work. By Dr. Jack Ellis Courtesy of the Outdoor Life Network Hypothermia Hypothermia is not an illness that strikes only mountaineers. Some people can become sick from hypothermia in temperatures in the low 50s.
Prevention is the best medicine.
Wear a synthetic pile or wool sweater. These materials keep you warm even when wet. In addition, the synthetic materials dry very quickly. The worst material is cotton, which loses all of its warmth when wet. If wind or rain is a factor, make sure to bring a shell along.