As a beginner, it is important to perform a posterior pelvic tilt prior to performing the crunch. To do this, press your lower back into the floor while curling your pelvis slightly upward. This will help you engage the right muscles.
Stop when you feel tired. Build your resistance slowly.
Bent-knee sit-up/crunches. American Council on Exercise website. Available at: http://www.acefitness.org/acefit/fitness_programs_exercise_library_details.aspx?exerciseid=52. Accessed August 8, 2016.
When pigs crunch: A commonsense approach to abdominal training. American Council on Exercise website. Available at: http://www.acefitness.org/certifiednewsarticle/1884/when-pigs-crunch-a-commonsense-approach-to. Accessed August 8, 2016.
Last reviewed August 2016 by Michael Woods, MD
Last Updated: 8/8/2016