There are no punny slogans, flashy advertisements or intimidating muscle-bound training staff at Club Sierra, and that’s just the way they like it. The family-owned fitness facility in Grass Valley caters to many walks of life with many different fitness goals, all the while striving to achieve a friendly and accepting environment for people to reach their fitness goals. Club Sierra is for the average Joes, the baby boomers, those trying to get back into shape and those trying to stay in shape, said owner Mike Blackston. Club Sierra offers a cornucopia of workouts and activities to ensure that members …