Our Tazewell Pike location is open 24 hours a day M-F to fit your busy schedule during the week! National Fitness Center is a friendly, conveniently located club where you can relax, meet friends, and get in the best shape of your life! National Fitness Center offers a superior fitness and wellness facility that pampers you with personalized attention, innovative programs, and professional fitness testing to prescribe an exercise program just for you. Stop by and check out this location today! Conveniently located right off of I640.