In episode 19 of A Fresh Cup of Fitness, hosts Brittany Marsh and Jessica Danger sit down with Dave Colina of O2 Recovery Drink, who shares the particular difficulties of starting a beverage business, how O2 started in the back of a Prius, and what their plans for the future might be. If you take just one thing from this episode: If you want it to be sustainable, you have to be passionately invested in it.