Gymnastics Instructor II: In addition to previous requirements: Two years of gymnastics teaching experience in a recreation setting or a private club or one year of experience as a city of Thornton Gymnastics Instructor I. Physical and Mental Requirements: While performing the duties of this job, the employee is regularly required to climb, balance, stoop, kneel, crouch, crawl, reach, sit, stand, walk, push, pull, lift, grasp, talk, hear, and make repetitive motions.