Q:

What do sit-ups do?

A:

Quick Answer

Sit-ups are the basic exercise that is used to strengthen the abdominal muscles. They involve laying flat and raising one's torso from the ground. Compared to abdominal crunches, sit-ups exercise many other core muscles.

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Full Answer

People who are interested in fitness are usually keen on developing their abdominal muscles. The crunch exercise isolates the main abdominal muscle, the rectus abdominus. Sit-ups exercise many other muscles, including the hip flexors, the iliopsoas, the tensor fasciae latae, the rectus femoris, the sartorius, and to a very minor degree, the obliques. Sit-ups must be performed regularly at high volumes to develop strong abdominal muscles.

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