Women are trying to make their waists smaller than a piece of paper

By Nancy Makena.

The 'A4 waist challenge' sees ladies

hold up a piece of paper to their stomach to prove their bodies are more narrow. 

A bizarre social media craze taking the internet by storm is seeing women compare their waist measurements to PAPER in a bid to prove their fitness. 

The goal is to measure the same or narrower than A4 paper held in a portrait position (because obviously it would be too wide in landscape).

How wide is a sheet of A4 paper? Just 21 centimeters or 8.27 inches.

According to the women taking part, the belief is that the challenge is a very reachable and healthy goal to aim towards - and fit is the new sexy.

The images are being shared on social media website Sina Weibo - also referred to as Chinese Twitter - and follow similar crazes to prove fitness or 'womanhood'.

Social media users have slammed the pictures as 'worrying' and 'wrong', saying this fitness trend is unrealistic.