Therapy apparatus and method for use on, among others, human infants. In one embodiment, the apparatus provides apryrogenic enhancement of body heat production by external application of heated rubefacient herbs and seeds of the botanical family Crucifererae, in an elastic breathable and flexible fabric belt. Heating of the herbal belt in a microwave of other facility produces radiant heat, which when the apparatus is placed around the abdominal wall of an infant's body, provides therapy. A balance of enhanced body heat combined with the body's dissipation of heat creates a steady warming of the abdomen in conjunction with the relaxing olfactory effects of the herbal scents.