DULUTH — It’s never too late to begin investing in personal fitness, according to Time IV Fitness owner Shawn Fitch. Clint Austin / Duluth Media GroupTime IV Fitness is a private holistic wellness studio that offers personal training, senior fitness instruction and military bootcamp preparation. The Time IV Fitness storefront in Duluth. Clint Austin / Duluth Media GroupWhile it does not offer group classes, Time IV Fitness currently serves 25-30 clients with personal training. Clint Austin / Duluth Media GroupFrom there, Fitch designs exercise programs that incorporate Olympic lifting, powerlifting, CrossFit and stabilization, in addition to nutrition plans and smoking-cessation services.