Everyone always answers this with "Netflix."
I tried that for a while and it works. Then 4.1 hit and the adventurer squadron emotes inspired me to grab the dumbbells and integrate the workouts I was already doing (and sometimes skipping) into the routine. It works surprisingly well, the 5 minutes between spawns on unspoiled nodes is about the same amount of time it takes me to complete 3 sets of an exercise! Moving between nodes is about the right amount of time for a rest period and, most importantly, I haven't skipped a workout since I started doing this. Now instead of one activity fighting the other for my time I think they're actually reinforcing each other.
Does anyone else have some creative suggestions for passing the time?