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The crunch or curl-up is an abdominal exercise that works the rectus abdominis muscle. [1] It enables both building and defining "six-pack" abs and tightening the belly. Crunches use the exerciser's own body weight to tone muscle and are recommended by some experts [ like whom? ] , despite negative research results [ citation needed ] , as a ...
Abdominal exercises also put some degree of compressive force on the lumbar spine, putting unwanted stress on the lower back. In addition, exaggerated abdominal exercise can cause respiratory problems. [17] A study of twelve exercises concluded that no single exercise covered all abdominal muscles with high intensity and low compression. [18]
The stomach vacuum is an isometric ab exercise that strengthens the core. Physical therapists say it's effective at working the abs and reducing back pain. This viral ab exercise looks like a hoax ...
The wall sit, also known as a static squat, is performed by placing one's back against a wall with feet shoulder width apart, and lowering the hips until the knees and hips are both at right angles. The position is held as long as possible. The exercise is used to strengthen the quadriceps. Contrary to previous advice in this section, this ...
The push-up (press-up in British English) is a common calisthenics exercise beginning from the prone position. By raising and lowering the body using the arms, push-ups exercise the pectoral muscles, triceps, and anterior deltoids, with ancillary benefits to the rest of the deltoids, serratus anterior, coracobrachialis and the midsection as a ...
The most common plank is the forearm plank which is held in a push-up-like position, with the body's weight borne on forearms, elbows, and toes.Many variations exist such as the side plank and the reverse plank.
It is most common for aerobic exercises to involve the leg muscles, primarily or exclusively. There are some exceptions. For example, rowing to distances of 2,000 meters or more is an aerobic sport that exercises several major muscle groups, including those of the legs, abdominals, chest, and arms.
The vacuum exercise is an exercise which involves contracting some internal abdominal muscles, primarily the transverse abdominal muscle, and not as much the diaphragm. Repetitions of the exercise may be used as a form of endurance training, and light strength training. There is difficulty building strength in the muscle, as it is not easy to ...