In the portrait of Michelangelo's friend, a small figure can be seen standing in the area immediately in front of her abdomen and between the lines that form part of her dress. (sciencedaily.com)
«Diastasis» means separation, while «recti» refers to the large vertical muscle bands of the front of the abdomen called the rectus abdominis. (mindbodygreen.com)
If you ask a not - so - smart trainer how to develop your core muscles, chances are, he / she will give you a bunch of exercises that target your rectus abdominus, located on the front of your abdomen. (fitnessandpower.com)