Mina Kimes and Chase Daniel react to the 49ers signing Christian Kirk to a one-year deal. (1:41) PHOENIX -- A few days after the San Francisco 49ers' season ended, general manager John Lynch vowed to investigate anything and everything that might have contributed to the team's avalanche of injuries in 2025. That included the viral online theory that an electrical substation near the team's training facility at Levi's Stadium was having adverse effects on the players. Speaking Sunday afternoon at the NFL's annual meetings, Lynch ruled out the substation theory and provided tangible steps the team is taking to attempt to reduce future injuries. According to Lynch, the Niners hired an independent scientist to study the substation and see whether there was anything to the idea that the facility could be contributing to their injuries. "It basically was a big nothing burger," Lynch said. "We're in a safe place of work. ... It's a normal place of work. It's a normal gym.…