Richard Karn says he's learned to have an 'off switch' when he's eating The "Home Improvement" star recently lost weight and has been learning how to eat healthier and in moderation. NEW You can now listen to Fox News articles! Richard Karn says maintaining a healthy weight is a "conscious effort." The " Home Improvement " star lost 30 pounds last year, and while he told Fox News Digital that maintaining a "perfect" weight is a "recipe for disaster," he is learning to listen to his body.  "Once