It's no secret that just like fashion trends, workout fads come and go.
There's no doubt, for example, that SoulCycle has been the fitness craze of the last few years.
Celebs such as Kim K, Victoria and David Beckham, Nicole Kidman, and Oprah Winfrey were all swearing – and sweating – by it.
Even Irish models couldn't resist testing it out: Roz Lipsett and Nadia Forde have both admitted they've attended classes Stateside.
But are we now approaching the end of SoulCyle's dominance? Because slowly and surely, waves and waves of A-listers are stepping out of the gym and into the ring.
In fact, dare we say it, we're on the verge of a brand-new, high-profile exercise movement.
Really though, when Roz Purcell said in an exclusive interview with SHEmazing! back in April that boxing was her latest fitness obsession, we should have known then that the sport was about to become a serious celeb trend.
"I started boxing about three or four months ago in Beau Jack’s off Camden Street," she revealed at the time. "I had friends tell me ‘oh you think you’re fit – you need to try these boxing classes.’
"The first class almost killed me. Afterwards I felt like I needed to go lie down for the rest of the day.
"But now I’ve found my stride and I’m loving it. The classes are packed full of guys too so you really have no choice but to push yourself."
Since then, we've started see the sport crop up just everywhere: from our favourite BBF trio of Kendall, Gigi and Cara, to a load of the Victoria’s Secret Angels, boxing is where it’s at.
Think Karlie Kloss, Miranda Kerr, Candice Swanepoel, Doutzen Kroes, and Adriana Lima – all of whom credit the ferocious sport with their long, toned limbs.
Aside from Cara Delevingne's latest Chanel campaign (shot by Karl Lagerfeld, natch) being set in the boxing ring, the 22-year-old beauty has also attributed her slim torso to intense boxing training.
Alexander Wang's collection for H&M last November also, significantly, included boxing gloves.
So why are the hottest models in the world ditching the gym for the ring?
Well, for one thing, fans say it's far more exciting than your average workout. Furthermore, it works your whole body.
Then, you also have to concentrate on footwork and choreography which can help you forget about the tiresomeness of working out.
Somehow we don’t think it’s going to be too long before the boxing classes in Irish gyms have a queue out the door too. Bye-bye SoulCycle, hello boxing ring.