She said: "From going out every week to the pub, going clubbing, sniffing tons of cocaine, ketamine, anything you can find to the other side, watching what you put in your body, dieting, health and exercise, regular routine.
Then the video drifts to an image of how she looked before her new holistic lifestyle - a healthy shape in a more modest bikini.
“So I was relying on a pill everyday to make me happy and so I didn’t have like dark, suicidal thoughts whereas now I have those good days and I have those bad days but it’s more about training and what I’m focusing on.
Brooke's's 962,000 Instagram followers struggled to recognise her change in physical appearance - as shown in her clip featuring two mirror selfies.
First Brooke was seen in a typical boxer's pose, grinning as she flexed her arm muscles, albeit only wearing lacy underwear.
