How will 2026 shake up the fitness world? Our editors give their predictions on what will most likely be the biggest ...

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.

My latest fitness escapade ended last week. I started P90X, BeachBody's newest program, on March 1. The 90-day exercise plan was advertised as an extreme fitness program that would challenge even the ...