Yoga as we know it today -- a set of postures (asanas) combined with breathing techniques -- dates back to around the grand old year of 1960.
In other words, yoga is as old as Bono.
"But how can that be?" you scream, rending your organic exercise mat in two. Well, that "five thousand years old" claim rests entirely on some 5,000-year-old pictures found in the Indus Valley of a man sitting cross-legged. Though this is one of the main yoga positions, it so happens that it's also the position most people take when, you know, they sit on any flat surface.
The ancient art of sitting on your ass and daydreaming.