Espousing a holistic worldview that does not create a dichotomy between mind and body, many Rodnover groups employ physical techniques, or martial arts, as means for cleaning, strengthening and elevating the mind. Some Rodnover groups incorporate practices which are not Slavic in origin. For instance, a group of Polish Rodnovers has been documented to use the "fire poi" at their Midsummer festivities, a practice that originally developed in Pacific regions during the mid-twentieth century. The Ukrainian organisation Ancestral Fire of the Native Orthodox Faith promotes a healing technique called "zhyva" that has close similarities to the Japanese practice of "reiki". In another instance, Lesiv observed a Ukrainian Rodnover who legitimised the practice of "yoga" by claiming that this spiritual tradition had originally been developed by the ancestors of modern-day Ukrainians.