From flip phones to frosted tips, the 2000s are back. And now, it's the turn of the century’s most iconic workout program: P90X. If you’re too young to remember, the original, 12-DVD set was a monster ...

In 2005, P90X exploded onto the scene with its now-iconic late-night infomercials, showing how everyday people could achieve ripped abs and total body transformation in just 90 days, all without ...