New Design! Quick Stress Test Biofeedback Cards with bio-Medical.com Logo (20 Pack)

Anyone having anxiety can benefit from the Stress Control Biofeedback Card. Makes relaxation training fun and inexpensive. Credit card size with black square that changes color on touch. Relaxation techniques on back help turn card blue (most relaxed). Builds in automatic relaxation response when stressed. Lessens anxiety-caused headaches, HBP, insomnia, smoking, overeating. Temperature indicator, credit card size in durable plastic. Liquid crystal square turns color as it is warmed by the finger. A color rainbow on the card compares the crystals color to Stressed, Tense, Normal or Calm. 20 cards per package.