While being treated for various injuries, Favre developed an addiction to Vicodin, which became publicly known when he suffered a seizure during a hospital visit. Amid an NFL investigation, he went public to avoid any rumors about his condition. In May 1996, he went into treatment and remained in rehabilitation for 46 days. Had he chosen not to go, the NFL would have imposed a $900,000 fine. Favre led the Packers to their best season in 30 years in the 1996 season, winning his second consecutive MVP award in the process. The Packers led the NFL in points scored (456) as well as fewest points allowed (210), joining only the 1972 Dolphins as the only two teams to ever accomplish this. The defense also set a then NFL record for the fewest touchdowns allowed in a 16-game season with 19. Favre threw for 3,899 yards, a career-high 39 touchdown passes (third highest ever at the time), only 13 interceptions, and passer rating of 95. 8 (the third highest of his career). Green Bay tied the Denver Broncos for the NFL's best regular season record, 13–3, defeated the San Francisco 49ers (35–14) and Carolina Panthers (30–13) at Lambeau Field in the playoffs. The Packers advanced to Super Bowl XXXI at the Louisiana Superdome, a short drive from Favre's hometown.