Core work can seem a little dreary compared to the adrenaline rush you get from hoisting a barbell over your head or powering through squats. Crank up some tunes to get a good rhythm going, and spend some time going through the full range of motion on each exercise.
Option 1 HIIT
30 seconds work/30 seconds rest for 12 sets, or 1 minute work/1 minute rest for 6 sets
Option 2 Tabata
20 seconds work/10 seconds rest for 8 sets