Speaking about the magnetic therapy, Naren Bisne of Nagpur said, ``People who have undergone this treatment in Maharashtra have been cured of several ailments.'' Bisne added that for treatment of diseases like paralysis and arthritis the magnet should be kept in the knee. He added that the magnet was not just a simple piece of iron, but a specially treated one. The treatment is painless, said Bisne, adding that the cure was permanent.