An escarpment (or scarp) is a type of cliff, formed by the movement of a geologic fault, or a landslide. Most cliffs have some form of scree slope at their base. In arid areas or under high cliffs, these are generally exposed jumbles of fallen rock. In areas of higher moisture, a soil slope may obscure the talus.
Primary Muscles. The primary muscles the plank works are the erector spinae, the rectus abdomimus and the transverse abdominus. The erector spinae is a large muscle that runs up the length of the back. It surrounds your spine and allows you to straighten your back and rotate side to side.he plank is one of the simplest and most effective abdominal exercises. In its most basic form, you brace yourself at the top of a pushup while contracting your core muscles. You can do multiple variations of the plank to create more challenge and target different parts of the core.
SIDE PLANK WITH QUAD STRETCH. This two-in-one move hits your obliques and improves your flexibility. You'll not only work the muscles on the side of your torso, but you'll loosen your hip flexors, a group of muscles on the front of your hips that allow you to bring your legs toward your chest, says Gaddour. Prolonged sitting can make these muscles tight, resulting in injuries like hamstring strains and back pain.