Stress card as seen on Dr. Oz Show Easy to read Stress Check Magic Word super biosquares with words which "light up" depending on the temperature with 4 different ranges and 1.25 degree Fahrenheit resolution. They read calm (90-95) normal (85-90) tense (80-85,) stressed (75-80). 30-mil plastic white card with metallic foil/ink in either blue, red, green, silver or gold.