"Clothing is your first and best line of defense against harsh environments. Wear the right clothes, and you can keep your body temperature above 36 degrees Celsius. If you wear too little, your body temperature will drop below this number, and you'll quickly experience hypothermia."
Bi Fang zipped up his clothes and tightened them again. Initially, because the temperature of the clothes was very low, he felt cold, but he quickly warmed up.
"Most survival experts will tell you that the best garments for sub-zero temperatures are Gortex outdoor jackets, wool socks, wool clothing, and wool gloves. That's true, but in extreme survival situations, what you carry with you determines what you can wear."
"To maximize their effectiveness, remember the acronym COLD, which stands for clean, avoid overheating, loose, and dry."