Most scholars assume that the act of “Tebowing” originates with Tim Tebow, NFL quarterback and God-fearing Christian known for going down on one knee to pray before, during and after games. Like planking, the act of “Tebowing” is now spiking in popularity on the internet, with photos of people “Tebowing” in various places and situations being uploaded constantly.
Now, despite the sudden surge of “Tebowing” popularity, this practice can actually be traced back as early as the fifth dynasty of Egypt, with the origin of Isis, the goddess of motherhood, magic and fertility.
Her early “Tebowing” technique varies greatly from Tim Tebow’s modern take because her bird-wing arms are extended, her head is looking straight forward and she is sitting on her heel.
This practice of “Tebowing” will not be seen again until the year Jesus is born. According to Christian tradition, wisemen and shepherds follow a bright star to “Tebow” in front of the baby Jesus and show reverence for God’s only Son. Unlike Isis’ early “Tebowing” technique, you begin to see some of the more modern “Tebowing” elements: arms are close to the chest and the head is facing downward.
Fast-forward to the ninth century and “Tebowing” surges in popularity again with the “Dvarapala,” or gate-guardian warriors seen in Hindu and Buddhist cultures.
What we now recognize as modern “Tebowing” is believed to have started from the “The Thinker,” a marble and bronze sculpture by Auguste Rodin, completed in 1902.
The end of World War II made “Tebowing” finally popular again with countless memorial statues using this pose:
Some liberal scholars believe that “Tebowing” is actually synonymous with the act of kneeling, which is defined by Wikipedia as “a human position in which the weight is distributed on the knees and feet on a surface close to horizontal.”
This new school theory, however, is highly criticized and unanimously rejected by the “Tebowing” Traditionalist school of thought.
Thanks Wikipedia, for letting me rip off some information from you.