English Meaning: The name Cliff is an English baby name. In English the meaning of the name Cliff is: River ford near a cliff. American Meaning: The name Cliff is an American baby name.
Core exercise is any exercise that works any part of your trunk to your pelvic region. When most people tell me they want to work on their core, this means they want to work on their abdominal muscles. The abs aren't the only part of your core as so is your back and spine.
To the rehabilitation world the core is the lumbar-pelvic (trunk) and hip complex. The Core is composed of as many as 35 different muscle groups connecting into the pelvis from the spine and hip area.In order to simplify the Core muscles I have divided them into four regions; back extensors, abdominals, lateral trunk muscles, and the hip muscles. have put together an evaluation of specific tests to determine muscle strength of the core muscles. One of the tests I use is a simple single leg stance position. It is amazing how many athletes have difficulty standing on one leg for 6 seconds.