N-Dubz star Tulisa Contostavlos says she has "eyes in the back of my head," thanks to a new tattoo of a wolf on the back of her neck. The British singer shared a reel of herself posing in a yellow bathing suit, showing off the new ink. "The Lone Wolf," she captioned the post. How does she stay so fit? Read on to see 5 ways Tulisa stays in shape and the photos that prove they work—and to get beach-ready yourself, don't miss these essential 30 Best-Ever Celebrity Bathing Suit Photos!

Tulisa loves boxing and martial arts workouts. "I'd say the number-one thing that sets boxing apart from other workouts is the degree of stress relief. It's unlike any other workout," says professional boxer Arnold Gonzalez. "Boxing builds confidence and discipline at another level."

Tulisa is happy being "boring". "Honestly, you could go as far as to say I have a boring edge," she says. "Don't get me wrong, if I'm having fun I'm going to have fun. But I need a lot of quiet time. I've started meditation, I even train in Kung Fu, I'm into my juicing, my healthy eating – my whole lifestyle has taken a massive turn."

Tulisa shared her everyday workout on Instagram, highlighting how different her life is now from the old partying days. "This is probably the healthiest I've ever been on tour," she says. "10 years ago I didn't step on stage without a double JD. I'd be out partying with the boys & sleeping all day. Now I start each day with a fresh veg & fruit juice and an hour & a half gym sesh. Yoga, meditation, clean healthy eating, staying hydrated & no alcohol whatsoever & I have been teetotal for 2 months running up to it to make sure I'm on top form. I feel the best I've ever felt."

Tulisa understands what works for her—and restriction is not on the menu. "Now I've really benefited from a healthier lifestyle and understanding it's not that I can't eat what I want," she says. "There are healthier options for everything. Even though I say no carbs in the week, I have carbs but instead of having chips or rice, I have bulgur wheat and sweet potato. It's about finding healthy alternatives."

Tulisa dances on stage for every performance, which is a full-on workout just in itself. "Dancing is mainly linked to physical health benefits, but when you dance you are moving different parts of your body in a coordinated way, and this activates several parts of the brain," says the British Heart Foundation. "One small study even found that dancing is associated with a lower risk of dementia. The research, published in the New England Journal of Medicine, followed 469 people aged 75 and over, who didn't have dementia at the start of the study. The researchers measured the association between leisure and physical activities and the likelihood of developing dementia over time. They found that dancing was the only physical activity associated with a lower risk of dementia."