Ключевые слова: abstract, board, care, close up, construction, copy space, experiment, extreme, extreme hobby, hammered, material, meditating person, metal, metal nails, metallic, nails, needle, needles, pain, pattern, person, physical training, practice, pressure, range, relaxation, relaxedly, relaxing exercise, revitalize, sadhu board, safety, sharp, sit, sitting on nails, steel, stress, texture, textured, therapeutic, tool, training, trick, wooden, yoga, yoga practice, zen,