Your rectus abdominis consists of two parallel muscle bands on either side of your torso connected by a thin strip of tissue called the linea alba. When this strip of tissue is overstretched ...

It’s normal for pregnant women to experience separation of the parallel muscle band of the anterior mid-abdominal wall known as diastasis recti abdominis (DRA) — about two thirds of mothers-to ...

This move works several muscles, including the quadriceps, hamstrings, and glutes. To do it correctly, keep your back straight, feet shoulder-width apart, and lower until your thighs are parallel ...

which causes the overall length of a muscle to change. An individual sarcomere contains many parallel actin (thin) and myosin (thick) filaments. The interaction of myosin and actin proteins is at ...