Sihiva Kriya is a ancient knowledge Chinese Art of Masculinity. The technique itself is Sue Shi Kong (lifting weights with the Pranayamas) and other practices as Maha Bandha , Udijjana Bandha , Nauli , special Pranayamas with Chi Kung movements of Oriental Medicine.
Falun Gong does this. That’s really all I know about them other than the government hates them. Jon
Falun Gong means literally, “Dharma Wheel Practice” or “Law Wheel Practice”) is a modern Chinese spiritual practice that combines meditation and qigong exercises with a moral philosophy centered on the tenets of truthfulness, compassion, and forbearance (Chinese: 真、善、忍). The practice emphasizes morality and the cultivation of virtue, and identifies as a qigong practice of the Buddhist school, though its teachings also incorporate elements drawn from Taoist traditions. Through moral rectitude and the practice of meditation, practitioners of Falun Gong aspire to eliminate attachments, and ultimately to achieve spiritual enlightenment.