She told a UK gossip mag: ‘being in the spotlight made me start training. I've always been slim but I saw some bits on my body I didn't like.’
The star, who has dated TOWIE co-stars Mario Falcone and Mark Wright, became more conscious of her body after she found fame on the hit ITV2 reality show.
‘I started working out and everything lifted up and I felt so much better.’
Even though super-fit Lucy keeps an eye on her figure, she admits she refuses to deny herself treats, saying: ‘I don't think you should go through life without a chocolate bar!’
In order to keep her diet balanced and healthy, Lucy says: ‘I just make sure everything in my cupboard is healthy. And that way when I do go out, I'll let myself have what I want.’
Lucy started her own personal training website, resultswithlucy.com, after she discovered her love of keeping fit.
The TOWIE star is now focusing on her website following her exit from the show last year.