How to train the eighth abdominal muscles?

How to train eighth-pack abs?

There are generally three types of abdominal muscles:
The first type with 8 packs is considered a macho man
The second type costs 6 yuan and is considered a big man
The third type costs 1 yuan and is considered a small man (that is, no one)

Normally, it is 8 yuan.
Most people who have not practiced deliberately have 4-6 pieces that can be seen with the naked eye.
The abdominal muscles are divided into upper abdominal muscles and lower abdominal muscles. Each has 4 pieces.
The bottom two abdominal muscles are the largest. Difficult to train.
Finally:
Every normal person has 8-pack abs. It’s just whether they are obvious or not.