Many women, either during or following pregnancy, will suffer from the condition known as diastasis recti. This is where the rectus abdominus, or the 'six-pack' muscles that meet and run the midline of your stomach, will begin to think. The connective tissue in this area, the linea alba, is what holds the rectus muscles together on both the right and the left. Over time, as the abdomen is stretched, this thinning will cause the tissue to slack, resulting in the left and right muscles distancing themselves from each other. This condition is prevalent and commonplace during pregnancy, as the uterine