Ocean Air Christian Fellowship Founder "JB" Griffin started using filecards daily in college to track his daily goals, weekly goals, monthly goals, exercise, weight and food intake. In 1979 he started advertising and selling healthy habits now called trimcards (30 day supply) in Prevention Magazine. Today 44 Years later JBGmg still publishes trimcards as a weight management tool for individuals who want to look and feel their best by managing their food intake and maintaining a healthy weight.
https://jbgmg.com/trimcards-for-life-1