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.

We all know that exercise is important for overall health, but should our workout routine change as we get older? TODAY.com previously spoke with Dr. Eric Topol, a top cardiologist and longevity ...

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 ...