Sadhu Haridas was a hatha yogi and fakir of nineteenth-century India, renowned for his reputed power to control his body completely using the power of his mind, employing the energies of kundalini. His most notable feat, carried out in 1837, was to survive burial underground, without food or water and with only a limited supply of oxygen, for forty days. This feat took place at the court of the Maharaja of the Punjab, Ranjit Singh, at Lahore, India (now in Pakistan).