Abs
I would love to, however, sometimes I just have a lot of choerography that I want to cover and I have to make a choice between more choreography or abs(when making a video there are also time restrictions that have to be considered). Since you can only get "so" creative with abs I usually favor more choreography. A solution is to have an abdominal routine ready to go from another one of my videos(or someone elses)and to pop it in after the aerobic cooldown. Have fun!