Here is a simple functional routine using a stretch band and a tether point, which in this case is a fence. You can use solid tether point to anchor the band, such as a door jamb or large piece of furniture. This is a functional fitness routine that beginners should feel comfortable performing. When traveling, a stretch band will easily fit into your suitcase or carry on for an essential piece of fitness gear. This functional fitness exercise routine will strengthen your core, upper body and legs.