I have to take a stress test for an upcoming job probably sometime in late february or early march. Would rowing be the best way to improve my max along with some crossfit workouts? If anyone has any ideas please share. I only need to achieve a 41 and my last non VO2 stress test estimated my VO2 somewhere between 43 - 51. I am sure I am fine but I want to make sure. I hate treadmills. THanks!