The ski exercise machine is often a popular bit of fitness equipment that mimics the motion of cross-country skiing. It consists of two separate foot pedals that move back and forth in a sliding motion, allowing users to activate their lower body muscles in a very full range of movement. https://www.mediafire.com/file/jcbvixj64wymzhs/Why_a_Ski_Exercise_Machine_Belongs_in_Your_Home_Gym2.pdf/file