Kurtenbach: Want to know what’s wrong with the 49ers? Check the books (and the training room)

Want to know why the 49ers went from Super Bowl contenders to a team facing a steep, uphill climb to make the playoffs?

The answer isn’t on the All-22 tape or in Kyle Shanahan’s coaches’ meetings.

It’s in the training room.

I know Niners fans have erased the 2020 season (and perhaps the entire calendar year) from memory, and we’re all fortunate not to be reliving a global pandemic. But this 2024 Niners season has turned into a sequel to 2020, save for the long, forced trip to Arizona.