The 12-Minute At-Home Ab Workout program is a short interval workout that can be done at any time of the day. It can also be supplemented with any strength or endurance workout you do. It helps strengthen the overall 4 abdominal muscles and even the spinal muscles of the lower back. The time format challenges you to get in as many reps as possible and allows you to look forward to getting strong each time you do the workout. A good form, comfortable pace and mindful awareness is the trick to get as much from this workout.