The origin of Thai Martial Arts and Krachai Dam is the rural areas of Northern Thailand. Obviously they are related: the Krachai Dam was included during training, pre-fighting as well as frequent trauma recoveries as Muay Thai was and still remains very brutal form of Martial Art.
To insure that blood will fill every little vessel of fighter’s muscles, teacher (“Adjan”) often suggested to drink Krachai Dam decoction (herbal tea) during exercises and between fights.
Krachai Dam indeed became a part of every kitchen with its own purpose for many occasions.