Korean Kiln Sauna
Koreans swear by the han jeung mak, or kiln sauna. The practice, which dates back to the 15th century, involves sitting in a room heated by burning pine wood, wrapped in a jute garment to protect your body from the intense heat. All the perspiring you experience is intended to relax the body, and the kiln sauna is touted as a treatment for shoulder, head and neck pain, and also is said to improve your skin tone. At the equivalent $16 a session at spas in Seoul, it's remarkably affordable, too [source: Seoul Style].