DENVER (AP) - Guru Maharaj Ji returned to his office at the national headquarters of the Divine Light Mission here Monday following his discharge the previous day from St. Luke's hospital.

Dr. John Horton, his personal physician, said the 15-year-old "Perfect Master" from India was suffering from a mild intestinal ulcer.

The guru was hospitalized Thursday for tests to determine the cause of what was described as intense abdominal pain. Horton said that pain may have been from a gall bladder attack.

At the mission's headquarters in the Kittredge Building, the guru met with various of his followers. He claims a world wide following of 6 million persons.

He also toured the building's 11th floor, where four months of renovation were being completed. He soon will move into a corner officer there, with a view of both commercial enterprises and the Rocky Mountains.

As is his custom, the guru wore a smartly fashioned business suit and necktie.

Talking to some of the 120 mission staffers in the building, the guru betrayed no signs of the illness which hospitalized him and which had curtailed sharply his nationwide tour.

Horton said the guru's body had become weakened by the pace of leading the movement and because of irregular eating and sleeping habits due to continual travel.

The guru's body showed the stresses of a middle-aged executive, Horton said.

But Robert Mishler, the mission's executive director, noted Guru Maharaj Ji also has the recuperative powers of a 15- year-old body and said he was confident the guru would resume his national tour with appearances on the west coast in two to four weeks.

Prem Rawat's "Knowledge" has three parts: regularly listening to his speeches, doing voluntary work for organisations serving him or donating money and daily meditation correctly practicing the four techniques he recommends. The techniques are so simple it's hard to see how they could be practiced incorrectly. First technique ("Divine Light") involves sticking your thumb and middle finger on your eyeballs (NB: with eyes closed) and your index finger between your eyebrows. Second technique: ("Heavenly Music") poking your thumbs into your ears and listening. Third technique: ("Holy Name") thinking about your breathing (NB: continue to breathe). Fourth technique: ("Nectar") curling your tongue backwards and tasting. Rawat's father taught slightly different techniques but either way it's difficult to see how these could produce the benefits claimed for them especially as Rawat claims His Knowledge is the only method of attaining real happiness and love in this life.