The result is a neap tide, which occurs about once a fortnight. Neap tide is the period during which water levels are at their minimum tidal range: high tides are at their lowest levels and low tides are at their highest levels. The moon's elliptical orbit also results in varying tidal levels.
Photo Credit Nicolas Agustin Cabrera/Demand Media. Some of your back muscles are considered part of the core muscle group. Your lower back and the outer-middle part of your back, sometimes called your lats, are the back muscles that are also core muscles.Strong back core muscles support your abs and help you with actions like sitting up at your desk, bending to tie your shoe or reaching up to take something off a shelf.hoto Credit Nicolas Agustin Cabrera/Demand Media. Some of your back muscles are considered part of the core muscle group. Your lower back and the outer-middle part of your back, sometimes called your lats, are the back muscles that are also core muscles.
Any exercise that involves the use of your abdominal and back muscles in coordinated fashion counts as a core exercise. For example, using free weights in a manner that involves maintaining a stable trunk can train and strengthen several of your muscles, including your core muscles. You may also try several specific core exercises to stabilize and strengthen your core. A bridge is a classic core exercise.