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.

When Horton's creation, P90X, hit the fitness industry in 2005 ... Horton said the health scare prompted him to overhaul his routine, focusing less on hardcore workouts and more on recovery ...

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.

Beachbody trainer Tony Horton amps up the Muscle Confusion with brand-new moves and never-before-seen workouts all set to hot music created exclusively for P90X Plus by Jason Scheff, lead singer ...

Beachbody trainer Tony Horton amps up the Muscle Confusion with brand-new moves and never-before-seen workouts all set to hot music created exclusively for P90X Plus by Jason Scheff, lead singer ...