Greg Renker (born 1957), is best known for cofounding Guthy-Renker with partner Bill Guthy. He was born in Phoenix, Arizona in 1957 and had eight siblings. Growing up, Renker's family moved a lot due to his father's work managing country clubs and hotels. Renker worked his way through college at the San Diego State University and married Stacey Renker several years later. Renker credited the Eisenhower hospital for saving his life with an emergency heart bypass surgery and for saving his wife's life from a flu condition. After he recovered, the couple led a donation drive, which led to the creation of The Renker Wellness Center and a 24-room hospital facility called The Greg & Stacey Renker Pavilion. Renker met future business partner Bill Guthy at one of the country clubs managed by his father. The two both enjoyed self-help books and founded Guthy-Renker together to market self-help products in 1988. The company grew into one of the largest direct-response companies on the market and expanded into beauty and fitness products among others. Renker co-founded the National Infomercial Marketing Association (now known as the Electronic Retailing Association) and was awarded the Horatio Alger award, which honors individuals who overcome adversity to achieve success.