We both know travel well -- as a former McKinsey and Company consultant and a scientist who studies a topic of global interest -- we are familiar with life on the road. But airline status (overrated) is not all that we share in common. We are also both completely, 100 percent exercise-dependent. As in the kind that will probably make its way into the next version of the DSM.
(Note: True exercise dependence can be a serious issue. There is a big difference between having all of your days include a workout and having all of your days revolve around multiple workouts at the expense of a career, family, and friends -- unless you are a pro athlete, of course.)