Our legacy has stood the test of time. Since 1981, more than 100 peer-reviewed, published research studies have proven the efficacy of the lifestyle upon which Nathan Pritikin staked his name. Today, this research serves as the foundation of the Pritikin ICR program, a comprehensive cardiac rehab solution that helps patients reduce their risk of having another heart event through three key pillars: regular exercise, a balanced eating plan, and a healthy mind-set.