I like to work out in the morning. That way, by the time I’m out of the shower with a coffee in hand, the worst part of my day is over. My routine consists of this: I run a two-mile loop to the Vltava River, ending at an outdoor calisthenics gym. There I do three sets of pull-ups, three sets of dips, and three sets of leg exercises like air squats or lunges. As someone who spent the better part of the last 6 years lifting weights at a gym, I love this routine. It’s far from the best muscle-bu...