Alyson and Amanda Michalka of Aly & AJ posted highlights of one of their kickboxing workouts with Larry Crystal, their personal ninja. The sisters write, “You all know that we’re writing like crazy for our new record but we wanted to show you that we’re still staying in shape! after all, we need to be healthy once we’re back on the road touring again.” The pair then make a parody pitch for a personal ninja and CD-ROM and DVD for $9.99. Watch the clip via YouTube below.