"Yoga" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus,
MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure,
which enables searching at various levels of specificity.
A major orthodox system of Hindu philosophy based on Sankhya (metaphysical dualism) but differing from it in being theistic and characterized by the teaching of raja-yoga as a practical method of liberating the self. It includes a system of exercises for attaining bodily or mental control and well-being with liberation of the self and union with the universal spirit. (From Webster, 3d ed)
Below are MeSH descriptors whose meaning is more general than "Yoga".
Below are MeSH descriptors whose meaning is more specific than "Yoga".
This graph shows the total number of publications written about "Yoga" by people in this website by year, and whether "Yoga" was a major or minor topic of these publications.
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