The difference between crunches and sit-ups

 The difference between crunches and sit-ups

Some people often confuse sit-ups and abdominal crunches. In fact, the two concepts are completely different. Let’s look at the difference between abdominal crunches and crunches.

Sit-ups are lying flat on the ground, with your feet bent, and then the entire upper body sits up from the flat state. During the whole process, the practical force pulls up the body not the abdominal muscles, but the iliopsoas muscles of the crotch, and the abdominal muscles rise. The function of the upper body is to maintain the upright state of the upper body, so that the upper body can sit up as a whole under the action of the iliopsoas muscle. Although it also uses force, it is not the main source of strength. Therefore, many people do sit-ups and do too much. Feel the abdominal creatine, but the leg muscles are sore.

Let’s take a look at the abdominal crunch:

The lying position is the same as sit-ups. The difference is that the lower back must always be close to the ground during the entire action process, and not leave the ground. The upper part of the upper body bends upwards, which can clearly experience the abdominal muscles. With the feeling of being squeezed, the upper body bends to the limit and pauses for a second or two to return to the lying position, repeating this practice. The entire movement is completely driven by the contraction and extension of the abdominal muscles, so the strength is really concentrated on the abdominal muscles.

Here are two sentences to summarize the essentials of sit-ups and abdominal crunches, so that everyone can compare and experience:

sit-ups are thinking about touching one’s legs with the chest.

Lie on your back and curl your belly is thinking about touching your lower abdomen with your forehead (though you can’t touch it).

Supine abdominal curling is a great exercise that stimulates the abdominal muscles. After the practice, the abdominal muscles will feel very sore. Pay attention to doing backwards in place after each group of exercises, stretching and relaxing the abdominal muscles, and avoiding muscle stiffness caused by lack of relaxation. .