Complex sentence: The Vimbuza causes imbalance in the hot and cold forces within the human body, whose healing process, to Tumbuka people, is a ritual dance with singing and music.
Split into simpler sentences: The Vimbuza causes imbalance in the hot and cold forces within the human body. A part of the healing process for Vimbuza-caused ailments, to Tumbuka people, is ritual dance with singing and music.