CrossFlowV: Tone Up to Tan Up Flow. 30 Minutes. There is a saying: "tan up or tone up", but I believe it's better to tone up TO tan up! Feel your most confident no matter how hot it is, and how little clothes you wear! This vinyasa flow will work ALLLL of the right spots to get you looking, and more importantly FEELING, your BEST! Deep breaths and have FUN!