If you think of the pelvis as being the home to organs like the bladder, uterus (or prostate in men) and rectum, the pelvic floor muscles are the home’s foundation. These muscles act as the support structure keeping everything in place within your body. Your pelvic floor muscles add support to several of your organs by wrapping around your pelvic bone. Some of these muscles add more stability by forming a sling around the rectum.
When your pelvic floor muscles are strong and flexible, you are able to control your bladder and bowels by contracting and relaxing the muscles and tissues in your pelvic floor. You also have better orgasms! When these muscles weaken due to habits, such as sitting too much and not moving your hips through their full range of motion, or from muscle tension due to chronic stress or overdeveloping the abdominal and pelvic floor muscles, you can end up with Pelvic Floor Dysfunction.
Exercise. There are a number of exercises you can do at home or at the gym to help strengthen your pelvic floor. Some of the best exercises include bridge pose, wall squats, jumping jacks, and dead bug crunch. For instructions on how to do these exercises, ask a knowledgeable trainer. You can also search online for video instructions.  I also recommend that you Google Katy Bowman, who has many good resources for pelvic floor exercises.
Pelvic floor dysfunction is common for many women and includes symptoms that can affect all aspects of everyday life and activities. Pelvic floor muscle (PFM) training is vital for treating different types of pelvic floor dysfunction. Two common problems are uterine prolapse and urinary incontinence both of which stem from muscle weakness. Without the ability to control PFM, pelvic floor training cannot be done successfully. Being able to control PFM is vital for a well functioning pelvic floor. Through vaginal palpation exams and the use of biofeedback the tightening, lifting, and squeezing actions of these muscles can be determined. In addition, abdominal muscle training has been shown to improve pelvic floor muscle function.[11] By increasing abdominal muscle strength and control, a person may have an easier time activating the pelvic floor muscles in sync with the abdominal muscles. Many physiotherapists are specially trained to address the muscles weaknesses associated with pelvic floor dysfunction and through intervention can effectively treat this.[12]
Many people with interstitial cystitis (IC) have problems with the group of muscles in the lower pelvic area and develop a condition called pelvic floor dysfunction (PFD). If you have IC and a poor urine stream, feel the need to push or bear down to urinate,  and have painful intercourse, you may have PFD. Treating PFD may be very helpful in reducing symptoms and pain for some IC patients—most patients see improvement after several weeks of therapy.

Develop your core. You can develop your core muscles (between your pubic bone and lower rib cage) by doing the following: Take in a deep breath while keeping your shoulders down and pulling your abdomen toward the back of your spine. Notice how this feels like engaging a corset. Hold for the count of 10—keeping all those corset muscles pulled in. Aim for doing this 10-20 times per day. This will pull up and strengthen your abdominals and take pressure off your pelvis. This is not the same as sucking in your gut unconsciously. This is consciously developing your core strength.  Esther Gokhale of the Gokhale Method teaches this as part of ideal posture: Sit with a towel folded lengthwise under your sitz bones. This will automatically tilt your pelvic bowl forward so that your pubic bone is where it should be—under your pelvic contents. Think of your pelvis as a bowl—you want it tilted so water spills out the front. When you sit, make sure your tailbone is out behind you.
When some or all of these structures of the pelvic floor are not functioning properly, they can cause a multitude of different symptoms. People who are suffering from bowel, bladder, and or sexual problems, as well as those who are suffering from pain in the pelvis, upper legs, abdomen or buttocks most likely have pelvic floor impairments contributing to their pain.
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