CrossFlowV: All The Essentials. 42 minutes. If your body is craving a delicious Vinyasa flow for all of your spots, with all of the moves, but you don't have 90 minutes, this one is for you. We've slotted in all of the components necessary to feel your best, that you crave from a vinyasa flow, and left out the rest. 90 minutes worth of class in 42. Deep breaths and ENJOY!