Red Velvet are breaking it down in a dance practice video for "Rookie"!

SEE ALSO: Red Velvet get funky in 'Rookie' MV!

The SM Entertainment group has been landing at #1 on music shows with the track, and they've been giving the choreography their all. The Red Velvet members have previously stated the "Rookie" dance is one of the most difficult they've had to pull off, and it shows in this intense practice video.

Check out Red Velvet's "Rookie" dance practice video above!