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Why Do Some Women Have Flat Buttocks?

author image Nick Ng
Nick Ng has been writing fitness articles since 2003, focusing on injury prevention and exercise strategies. He has covered health for "MiaBella" magazine. Ng received his Bachelor of Arts in communications from San Diego State University in 2001 and has been a certified fitness coach with the National Academy of Sports Medicine since 2002.
Why Do Some Women Have Flat Buttocks?
Ballet moves emphasize posture and strong glutes, creating a round bottom. Photo Credit Jupiterimages/Goodshoot/Getty Images

Some women appear to have a flat butt because they either have poor posture, lack mass in the hip, or a combination of both. You can improve the shape of your butt with exercises. Corrective exercises focus on improving your posture, while strength exercises help you increase muscle mass. Integrate both types of exercise in your workouts for the greatest benefits.

Posterior Pelvic Tilt

The posterior pelvic tilt is a postural deviation where your pelvis is tilted backward, causing your lower spine to decrease its natural extension. This causes your upper spine and shoulder girdle to round forward to maintain your center of gravity, causing your butt to appear flat and droopy. Side effects include weak hip, back, shoulder and abdominal muscles -- and pain in the back and neck, along with tight chest muscles.

Build Your Glutes for a Rounder Butt

Your butt muscles -- gluteals -- and fat tissue provide the shape of your butt, as well as support for your lower body when you stand and move. Weight training stimulates muscle growth in your butt, giving your buttocks greater definition. Exercises that work your glutes include squats, deadlifts, lunges and jumping exercises. For most strength exercises, the National Academy of Sports Medicine recommends two to three sets of eight to 15 repetitions. Train on three non-consecutive days each week for at least four weeks to see any significant muscle growth.


A sedentary lifestyle can cause your body to lose muscle mass and impact your posture. Sitting with poor ergonomics for a long period of time, such as sitting with a rounded spine and hunched shoulders, can lead to a flatter butt. Engaging in regular activities, such as hiking, swimming and dance can supplement the corrective exercise and strength training, which will teach you how to move better, preventing further postural deviation in the hip.

If You've Got, Don't Lose It

Increase lumbar extension through correct posture exercises to push your pelvis slightly back, giving you the appearance of a shapelier butt. Do seated overhead raises. Stand with your right foot in front of you with both feet pointing forward. Lace your fingers together and extend both arms in front of you with your hands facing toward you. Raise your arms over your head and turn your hands so that they are facing up. Tighten your left buttock to stabilize your pelvis, and do not move your torso as you stretch. You should feel your lower back extend slightly. Hold this position for five to six deep breaths. Switch leg positions and repeat the stretch.

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