The super fit star admitted that she's been "far too naughty" recently and is ditching sugar as part of a new detox.
Sharing a picture of a very healthy-looking omelette on Sunday (12 October), Lucy said: "I've been far to naughty the last few days so it's time to change!"
The former TOWIE star added: "Eating clean every day & cutting out sugar for 2 weeks!
"Breakfast omelette with organic eggs, sweet potato, butternut squash, ham & spinach with a pint of water with lemon & a Green tea."
Then she went a bit hashtag crazy: "#EatClean #Eatwell #Healthy #protein #Breakfast #detox #RWL #resultswithlucy."
We're very impressed with Lucy for kick-starting her diet on a Sunday! *Hides bacon sarnie and vat of tea*
Ms Mecklenburgh, who runs her own online fitness programme Results With Lucy, may have been indulging in a few guilty treats but she never lets her exercise regime slip.
She posted a snap of herself and her trainers in workout gear last week, adding: "3 high intensity dance/cardio workouts done!!"
And she also enjoys a juice whenever she can, drinking a carrot, celery, cucumber, apple, kale and lemon concoction last week to give her energy.
Oh, and as if Lucy wasn't busy enough with work and looking fabulous 24/7, she's also been occupied with a certain dashing Welshman.
Lucy is said to be dating presenter Gethin Jones.
We wonder if he'll be joining her on the sugar detox?!
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