This whole post sounds like a very false dichotomy to me. The author makes it sound as if `trained eight hours a day, four months in a row` is a single activity

This whole post sounds like a very false dichotomy to me. The author makes it sound as if `trained eight hours a day, four months in a row` is a single activity. But of course that to be productive, Keanu had to be on top of many different activities, in different locations with different trainers, in addition to what I believe would have been a myriad of other work activities he had to perform for unrelated professional responsibilities. Keanu Reeves is not a monk practicing the same activity day in and day out, but rather a very busy professional, with a team of people working for him to help manage his schedule.