How to Balance Your Hip Flexors and Ab Muscles Menu Verywell Fit Nutrition Weight Management Nutrition Facts Nutrition Basics Diets Meal Plans Meal Delivery Services View All News Fitness and Nutrition What to Buy How We Test Products Fitness Gear Nutrition Products Tools Recipe Nutrition Calculator Weight Loss Calorie Goal BMI Calculator Body Fat Percentage Calculator Calories Burned by Activity Daily Calories Burned Pace Calculator About Us Editorial Process Meet Our Review Board Search Pilates Beginners Balance Hip Flexors and Ab Muscles With Pilates By Marguerite Ogle MS, RYT Marguerite Ogle MS, RYT Marguerite Ogle is a freelance writer and experienced natural wellness and life coach, who has been teaching Pilates for more than 35 years. Learn about our editorial process Updated on January 16, 2020 Reviewed Verywell Fit articles are reviewed by nutrition and exercise professionals. Reviewers confirm the content is thorough and accurate, reflecting the latest evidence-based research. Content is reviewed before publication and upon substantial updates. Learn more. by Kristin McGee, CPT Reviewed by Kristin McGee, CPT Kristin McGee is a certified personal trainer and currently teaches yoga and meditation for Peloton. She is also certified in Pilates and by the National Association of Sports Medicine. Learn about our Review Board Print Gradyreese/E+/Getty Images Table of Contents View All Table of Contents How Hip Flexors Take Over Signs of Strong Hip Flexors How to Get Out Of the Hip Flexors If you take Pilates classes or fitness classes, you might hear the phrase, "Stay out of your hip flexors." The hip flexors are a group of muscles toward the front of the hip. Their main role is to help bring the thigh and trunk of the body closer together, say, for instance, when you move your leg and knee up toward your body. Technically, the hip flexors include the iliacus, psoas major, pectineus, rectus femoris, and sartorius muscles. Of the group, the iliacus and the psoas, which attach your pelvis to your femur (thighbone) and lumbar (lower) spine, are probably the most important. Collectively, though, all these muscles play an important role. You use them in many daily activities, including walking, stepping up, and bending over. How Hip Flexors Take Over Ab Workouts Obviously, you need your hip flexors. But you usually don't need them as much as you use them in ab exercises. When you target the abs, you perform exercises that decrease the distance between your thigh and trunk—think sit-ups, roll-ups, and leg lifts. The hip flexors are a strong group of muscles, and they try to take over—so you end up working your hip flexors more than your abdominal muscles. A perfect example is the kind of sit-up where you put your feet under something that holds them down and then do a bunch of sit-ups with an almost flat back. Those mostly work your hip flexors. People who do Pilates run the same risk with the many flexion (forward-bending) exercises they do. Signs of Strong Hip Flexors and Weak Abs Low back pain and soreness in the groin area may be signs that you're weak in the abs and overusing your hip flexors. Another clue is not being able to keep your feet and legs down when you do a sit-up or roll up. What happens is that the abs aren't strong enough to do their up-and-over contraction, so in order for the trunk and thigh to get closer together, the hip flexors take over, and the feet fly up. The reverse of hip flexion is a hip extension, which occurs when you increase the angle between your thigh and the front of your pelvis. A good example is when you move your leg to the back. Your gluteus maximus (aka your butt muscles) and your hamstrings are primary muscles of hip extension. It's important for the muscles of hip flexion and hip extension work together in a balanced way, and many people have weak or tight hip extensors. How to Get Out of Your Hip Flexors This isn't always simple. A lot of people have to constantly work at not engaging their hip flexors. For one thing, you can't really leave the hip flexors entirely out of most ab exercises—they're still an important part of the picture. The idea is to get in the habit of involving the abs as much as you can to keep the hip flexors from taking over. Your first line of defense is always awareness. When you do Pilates or other ab-focused work, put your attention on your abdominal muscles. These basic Pilates exercises can increase awareness and set the foundation for abdominal strength and body mechanics that balance ab and hip flexor use. Knee fold: In this exercise, the abdominal muscles stabilize the pelvis, so you can feel the subtleties of the hip flexors at work. Try to keep big muscles, like the quadriceps of the thigh, out of the exercise as much as possible. Chest lift: This exercise engages all the abs, but it feels more like an upper ab exercise. Stabilize the pelvis in a neutral position and move just the upper body in isolation. Your hips and legs should stay still and not grip. If the hip flexors start to get over-involved, you might have a sense that your knees want to pull toward your chest or tightness in the groin and thigh. Supported roll back: This exercise invites a deep abdominal scoop. As you roll back, you might sense a point where the hip flexors want to grab the movement. You can feel that at the crease of your thigh. As you roll down, try to focus on rolling down and controlling the abs. Think about getting some space between the top of the thigh and the lower abs. The Hundred modified: The full hundred calls for the legs to be extended, something the hip flexors often see as a call to over-action. Performing the hundred in a modified position with your knees bent and feet flat on the floor, or legs in tabletop, can help you focus on using your abdominals. A Word From Verywell As you work on increasing your awareness of the relationship between the abs and the hip flexors, you'll discover there's reciprocity in terms of one set of muscles doing the stabilizing of the trunk or pelvis while the other set moves. What you want to achieve is a muscular balance, better functionality, and ultimately more choices about how you move. 1 Source Verywell Fit uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. Bisciotti GN, Auci A, Di Marzo F, et al. Groin pain syndrome: An association of different pathologies and a case presentation. Muscles Ligaments Tendons J. 2015;5(3):214-22. doi:10.11138/mltj/2015.5.3.214 By Marguerite Ogle MS, RYT Marguerite Ogle is a freelance writer and experienced natural wellness and life coach, who has been teaching Pilates for more than 35 years. See Our Editorial Process Meet Our Review Board Share Feedback Was this page helpful? Thanks for your feedback! What is your feedback? Other Helpful Report an Error Submit Related Articles Don't Waste Your Time With Ab Crunches—Try These Core Burners 12 Pilates Exercises to Work Your Core in 15 Minutes Function of the Rectus Femoris Muscle 7 Essential Hip Flexor Stretches Essential Exercises for a Classical Pilates Mat Workout How to Do the Pilates Roll Up Exercise With Perfect Form 12 Hip Exercises to Increase Strength and Mobility 7 Best Hip Flexor Exercises A Fast and Effective 20-Minute Core Workout The 10 Best Stretches for Soccer Players Past the Basics: Yoga Poses for Intermediate Levels How to Strengthen Your Abs How to Do an Abdominal Crunch: Techniques, Benefits, Variations Cyclists Can Keep Limber With Different Types of Stretches Did You Know You Have These 5 Body Parts? 10 Ab Exercises That Won't Waste Your Time When you visit the site, Dotdash Meredith and its partners may store or retrieve information on your browser, mostly in the form of cookies. Cookies collect information about your preferences and your devices and are used to make the site work as you expect it to, to understand how you interact with the site, and to show advertisements that are targeted to your interests. You can find out more about our use, change your default settings, and withdraw your consent at any time with effect for the future by visiting Cookies Settings, which can also be found in the footer of the site. Cookies Settings Reject All Accept All