This paper is situated in the broader context of an examination of the relationship between East and West from the particular perspective of our experience of the body. It is therefore based on two specific traditions, one belonging to the East - a particular strand of Tibetan Buddhism - the other to the West - the Orthodox tradition of the heart prayer - in order to try to show the similarities and differences in their approach to the body and attempt to compare them in the light of their respective ‘phenomenology’. In this sense phenomenology, as a western philosophical discipline, plays a pivotal role in this comparison and hopefully helps to bring new light to bear on this investigation. The early Eastern church evokes the concrete experience of the body as a holy body and sees it as an exemplary route to deification via the mystical practice of the ‘heart prayer’ (hesychasm). As regards Tibetan Buddhism, it advocates the gradual experience of the body as a rainbow body, defined as a path towards illumination, by means of ‘sitting meditation’ which brings liberation in bardo. In order to carry out this analysis, I shall refer to two recent books that are authorities in both these fields, Corps de mort et de gloire, Petite introduction à une théopoétique du corps by O. Clément and Rainbow Painting: A Collection of Miscellaneous Aspects of Development and Completion by Tulku Urguyen Rinpoché.