The whole notion of “your brain thinks …” is a common interpretation of fMRI studies, but I think it is not very accurate or useful. It contains the idea that what your brain does is somehow separate from what “you” are thinking and doing. In practice, what we see in fMRI pictures is just the what the current thinking and activity looks like in the brain. So even if you saw the same patterns of activity for people watching and playing sports, that wouldn’t mean that the brain “thinks you are playing”, it just means that your thinking might be similar during both activities. As others have mentioned the article does not reference the title, so this is a comment on the title only.