In this fitness challenge, the creator invites members of his own family to participate in a 30-day body transformation experiment. His brother Jorg and sister Amber take on the challenge together, ...

The fitness world has embraced a new champion in core training, and traditional sit-ups have taken a backseat. The plank, despite its deceivingly simple appearance, has captured worldwide attention ...

After completing an incredible 90-day transformation, we wanted to see if the results would stick. This video checks in on my 17-year-old brother 30 days after the challenge ended. Is he still ...