a4 waist is here quickly pick up your vest line

After the 'reverse hand touching the navel' challenge, another devilish body standard is here: the A4 waist!

First, let's explain what an A4 waist is: a tiny waist narrower than an A4 sheet of paper is called an A4 waist. The A4 waist is set to become the ultimate standard for a perfect figure.

A4 paper is defined by the International Organization for Standardization's ISO 216, with dimensions of 21*29.7cm (210mm*297mm). So, as long as your waist width is less than 21cm, you can be said to have an A4 waist!

The A4 waist trend arrived even before summer. For those of you who sit in the office all day and have no time to exercise, are you ready to face this new challenge?

Without any equipment, here are four excellent exercises for a tiny waist. Hold each move for 30 seconds, do 3-5 sets daily, and practice two to three times a week, and you'll be on your way to achieving an A4 waist!

Stop saying you don't have time to exercise!