Remember the Insanity workout DVDs from late-night TV ads? It turns 15 years old this year. So I tried the Insanity workout — and here's what I thought.

If you're starting a workout program that calls itself "Insanity," you know it's going to be over the top. This is one of the most challenging fitness programs on the market. WebMD explains the ...

The madness that is the "24s" workout. Terry Crews’ signature "24s" circuit is an intense full-body workout that combines strength training with cardio for maximum impact.