This situation is caused by the large amount of lactic acid produced by abdominal muscles in abdominal muscle training. Generally, this kind of soreness will appear on the second or third day. Many friends who practice abdominal muscles for 8 minutes will mistakenly think that this is a tearing of abdominal muscle fibers, which leads to pain.

In fact, this kind of pain can be understood as that the practitioner does not exercise much for a long time, which makes the muscles in a dormant state. Once you do a little exercise, you will reactivate your muscles and release a lot of lactic acid. These are normal phenomena. Generally, if you don't continue to exercise for about 5 days, it will disappear, and if you continue to exercise for about 3 days, it will disappear.

The second question: Why is there no pain in the abdomen after practicing abdominal muscle training for 8 minutes several times?

This situation can be understood as that after a certain number of 8-minute abdominal muscle training, the abdominal muscles have adapted to the current exercise intensity. After the exerciser's exercise level is improved, the lactic acid released after each training will be reduced, so that the pain of the exerciser will be reduced, or even there is no pain.

The third question: Is it useful to practice abdominal muscle training for 8 minutes every day?

Practicing abdominal muscle training for 8 minutes every day is definitely useful for building 6 or 8 abdominal muscles, but if you want to build abdominal muscles faster and more effectively. I suggest that when you practice abdominal muscles every day, you can change the movement and intensity of exercise.

Increase the intensity of exercising abdominal muscles;

If you practice abdominal muscle training for 8 minutes before, a group can do 15 movements. The training level has improved, and one group can do 20 movements.

Change the action of practicing abdominal muscles:

If you have been doing sit-ups or sit-ups before practicing abdominal muscles, after using these actions for a while. You can choose to change the plate support or lie on your back at both ends. In short, abdominal muscle training needs to constantly change his movements, so that the exercise effect will be better.