The fitness world is experiencing a seismic shift that should terrify retailers

SoulCycleGetty/Michael BucknerPeople love SoulCycle.

The fitness world is experiencing huge shifts, and it’s making it an incredibly profitable business.

From SoulCycle to CrossFit boxes to the popularity of Tough Mudders, people are spending more money on fitness. SoulCycle even filed for an IPO last summer.

All of this comes at a time when people are spending less on clothing.People are threatening a boycott of a cult fast-food chain

The only brands that are thriving, unsurprisingly, are activewear brands like Nike, Under Armour, Lululemon.

Oddly, fitness can be a pretty pricey endeavour — so why are people forking over money to fancy classes?

It might be because it falls under the category that we know millennials love: experiences.

“One of the megatrends is this shift towards spending on experiences rather than things,” Jason Kelly, New York Bureau Chief of Bloomberg and author of Sweat Equity told Business Insider in a phone interview. “I do think that that is a big element it’s a big element in how millennials especially are directing their disposable income. [There’s] a lot more emphasis placed on what you’re doing rather than what you’re getting.”

Some of the trendiest fitness experiences have to do with community and experiences, Kelly said.

“And I think one of the important elements tied to that is how social fitness has become fitness for a long time was relatively solitary endeavour whether it was people going for a run or a bike ride or even on their stationary bike in their basement and candidly, even going to the gym and you know being one in a line of specially in new york city one in a line of 50 treadmills,” he said. “And now, much more group fitness — in a SoulCycle class or a Flywheel class — you’re much more engaged with the people around you, and there’s a real sense of community.”

The social aspect is huge. Kelly points to the notion of sharing what you’re doing Twitter and Facebook, but perhaps more notably, the idea of having a community. It’s already true that fostering a community is a way to build a strong — and perhaps cult-like — brand.

“What seems consistent is building — and I say this word with some trepidation — kind of these authentic community-driven brands seems to be the big lesson here,” he said. That people do react in a lot of ways to something that they feel they want to be a part of, that their friends are a part of, and that’s a brand that really understands them and caters to them and people like them.”

Pure barre classLily Lawrence/Stringer/Getty ImagesPure Barre is another way for people to define themselves with a fitness community.

And crucially, experiences are what define people, rather than just apparel — which is why fitness is seeing a huge boost

“In past times, it was wearing a Polo shirt or wearing a certain kind of shoe or … a certain type of clothes sort of helped identify [you] as a part of a tribe, and now it’s something you do,” he said.

All of that means someone would rather be defined by spending her money on SoulCycle classes and “riding with the pack” versus throwing money down on a J. Crew dress. And besides, if she documents it on Instagram, that experience could live longer than that dress would have, anyway.

NOW WATCH: This stationary bike might be a SoulCycle killer

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