"But once I got started and made the commitment, I was hooked." Like many devotees of the Power 90 Extreme, or P90X program, Banawa saw dramatic results. "It was amazing," said Banawa, who quit ...

Tony Horton, best known for the P90X workout, says he's thriving at 66 after tweaking his routine. Horton was diagnosed with a rare illness in 2017 and has since followed a flexible plant-based diet.