Jana Vaňková, better known by her nickname Jaja, is a Czech dancer and choreographer. She started dancing at age 14 doing freestyle dancing and battling, then later began teaching choreography. Vaňková's dance career began in 2006 with the dance crew Out Of Bounds, where she learned to dance hip hop, and as an individual, learned popping and locking techniques, among other styles. She later became one of the crew's choreographers. Two of the Out Of Bounds choreographies won the national champion ...