Core exercise are exercises that focus on either the stabilzation, endurance or strengthening of the core muscles. Core exercises focus on the abdomen, the lower abdomen and hips, the obliques, stabilizing muslces, the spine and the back muslces, as well as the butt. Core exercises train these muscles to work together properly to maintain proper balance, agility, posture and movement to help the body move efficiently as well as preventing injury.
Some examples of core exercises are the plank hold, side plank, floor bridge, bicycle crunches, reach throughs, push ups, back extensions and a number other exercises that focus on the trunk of the body.
The point of core exercises is to train the many large and small muscles that help control and stabilize the spinal column and pelvis to build endurance and strength and be better able to control the spine and pelvis when forces are applied to it during daily activities and physical activities. Core exercises can and should be incorporated into every workout you perform each time you exercise. This can be accomplished by performing as many exercises as possible while having your spine and pelvis unsupported by a bench or seat. This will require the core muscles to engage to stabilize the body.