In the discussion in the comments of this answer, I questioned whether the (reported) full 40 hours of designated work time (per week) for a new International Space Station (ISS) crew member could be spent on science (aside from exercise). I asked whether exercise counted as work time, and Organic Marble suggested I ask this as a new question.
I know we've had a question on how ISS crew splits their time between different activities before:
However, that doesn't seem to address whether the allotted exercise time comes out of their 40 hour work week.
Is exercise part of their work hours or not?
Update from comments: A thorough answer to this question needs to address not only whether the exercise is counted in the work week, but how many hours are in the work week and what portion of it is exercise.