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Reverse crunches work your oblique muscles and the rectus abdominis, the pair of muscles that run vertically down the core and are responsible for giving your core that “six-pack” look.
"Do not hollow your stomach or press your back against the floor", McGill says. Gently lift your head and shoulders, hold briefly and relax back down. [4] Research has shown that both sit-ups and crunches are mediocre strength-building exercises and have injured many people. [3] In a crunch, unlike a sit-up, the lower back stays on the
Abdominal muscles have many important functions, including breathing, coughing, and sneezing, and maintaining posture and speech in a number of species. [4] Other abdominal functions are that it helps "in the function of support, containment of viscera, and help in the process of expiration, defecation, urination, vomiting, and also at the time of childbirth."
Reverse crunches target the lower abs, helping to create a balanced, defined look. Lie on your back with your hands by your sides. Lift your legs, bending your knees at a 90-degree angle.
Bicycle crunches target the entire abdominal area, including the lower abs and obliques. Lie on your back with your hands behind your head, your legs lifted, and your knees bent at a 90-degree angle.
Sit-up form. 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.
The person bends forward and bows at the hips and recovers to upright. The good-morning is so called because the movement resembles bowing to greet someone. It involves the hamstrings but is primarily used to strengthen the lower back; the degree of knee bend used will change the focus – nearly straight-legged involving the hamstrings most.
Learn about crunches versus sit-ups, including the muscles they work and how to perform them properly. Plus, why other core exercises are actually better. ... For premium support please call: 800 ...