I have often done qigong and Tai chi chuan in power vortices – in the pyramids at Gisa and the temples in Upper Egypt (Karnak, Dendera, Abydos), in the Tor on Glastonbury and the Stonehenge in England, in the peaks of Huangshan in China, in the stone circles of Scotland, Iao Valley in Maui, Hawaii, and Mount Banahaw in the Philippines.