Think you know everything when it comes to clean eating? Check yourself with these 5 common mistakes.

Juice - 5 clean eating mistakes - PHOTO - Women's Health & Fitness

1. Juice
Who says? Usana Health Sciences nutritionist Ravinder Lilly

The gripe: Because the calories come primarily from sugar, your body doesn't detect it in the same way it logs food calories. Care factor? You can down a ton of calories without the attention of your body's usual 'appetite off' switches.

Just how dangerous is it? A glass of OJ with no added sugar contains 400 kJ – not much less than a piece of toast with Vegemite, except the fibre and chewing make it unlikely that you'd down four pieces in a row and still be hungry. Four OJs? Not so hard!