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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 are a type of strength exercise that affect the abdominal muscles (colloquially known as the stomach muscles or "abs"). Human abdominal consist of four muscles which are the rectus abdomens, internal oblique, external oblique, and transversus abdominis. [1] When performing abdominal exercises it is important to understand ...
Sit-up. The sit-up is an abdominal endurance training exercise to strengthen, tighten and tone the abdominal muscles. It is similar to a curl-up (that target the rectus abdominis and also work the external and internal obliques), but sit-ups have a fuller range of motion and condition additional muscles.
Crunch was an early adopter of these group exercises and the first gym to offer Zumba. [23] Initially, Crunch Fitness featured some unusual classes such as bicycle-based yoga, coed wrestling, and an "Abs, Thighs and Gossip" class run by a drag queen. As early as 1997, Crunch offered pole dancing and capoeira. [5]
Dumbbell deadlift. The deadlift is performed by lifting a weight off of the floor until fully upright. This is a compound exercise that also involves the glutes, lower back, lats, trapezius (upper back), and, to a lesser extent, the quadriceps and the calves. Lifting belts are often used to help support the lower back.
Leg raise. The leg raise is a strength training exercise which targets the iliopsoas (the anterior hip flexors). Because the abdominal muscles are used isometrically to stabilize the body during the motion, leg raises are also often used to strengthen the rectus abdominis muscle and the internal and external oblique muscles.
Plyometrics, also known as jump training or plyos, are exercises in which muscles exert maximum force in short intervals of time, with the goal of increasing power (speed-strength). This training focuses on learning to move from a muscle extension to a contraction in a rapid or "explosive" manner, such as in specialized repeated jumping. [1]
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. [1][2] The plank is commonly practiced in Pilates and yoga, and by those training for boxing and other sports. [3][4][5] The ...
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