P90X trainer Tony Horton is in the best shape of his life at 66. Here are his top longevity tips. Tony Horton, best known for the P90X workout, says he's thriving at 66 after tweaking his routine.

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.

55 pounds="" and="" a="" year="" later,="" brett="" is="" now="" such="" a="" believer="" in="" the="" p90x="" that="" he's="" an="" independent="" coach="" for ...

P90X Plus workouts are designed for those who have completed P90X and are looking to take things to the next level If you love P90X and you're saying, "Give me more," or, "I need a challenge"-then ...