This chapter sets out two arguments. My argument in relation to the fi rst issue is that while there are subtle aspects in Tibetan medical concepts of the body, we need to be careful in talking about a separate entity of a ‘subtle body’ as such. My second argument is more preliminary in nature and suggests that Tibetan medical ‘circulatory systems’ or ‘circulatory channels’ do not necessarily move in circulation in the Western sense of the term, and therefore such terms, both in themselves or as translations of Tibetan medical terms, should be used more cautiously.