The A4 waist challenge is a popular trend on social media.
A4 waist challenge
Frequency:
70
%
She completed the A4 waist challenge successfully.
A4 waist challenge
Frequency:
60
%
Many people are participating in the A4 waist challenge to achieve a slim waist.
Idiomatic Expressions for A4 waist challenge
Phrase: fail the A4 waist challenge
Meaning: to be unsuccessful in achieving a slim waistline as desired
Usage: Despite her efforts, she failed the A4 waist challenge and decided to focus on being healthy instead.