America's business leaders are rethinking how they network.

Gone are the days when executives both young and more veteran had the time to spend hours at a boozy lunch or on the golf course. Taking its place are a new set of networking activities — think "sweatworking" on a run or at a SoulCycle class, or going on a cultural retreat with business associates.

Leading the charge is a new generation of business leaders who value efficiency and multitasking more than ever before. Rather than devote a large chunk of time to a formal activity they wouldn't necessarily enjoy otherwise, many execs are seeing the value in combining their hobbies with their business.

"I have found one of the most interesting ones has been music festivals. Several very compelling things have come out of Bonnaroo, Outside Lands, and Trans-Pecos for us over the past few years," Amar Lalvani, the CEO of the hotel group Standard International, told Business Insider. "It's a real opportunity where executives are way out of their element, let their hair down, and have the time and space to have unexpected conversations about shared interests that lead to ideas and initiatives."

Lalvani said the idea was consistent with what he called "the almost total blending of work and play for most executives these days."

For many of those execs, that means getting a workout in while they catch up with contacts. The trend of taking clients to SoulCycle has been well-documented, but execs at the fitness studio say they see sweatworking becoming even more popular.

"At first it was mostly people in media and finance, but now it's lots of industries," Gabby Cohen, SoulCycle's vice president of brand strategy, told Business Insider. "We're all time-trapped, but it's important to stay connected to other people. Having the chance to connect with people in a positive, healthy way for a short period of time makes SoulCycle an appealing option for this."

During this year's South by Southwest festival, Foursquare partnered with Cyc Fitness to host a spinning-while-networking event at different sites around Austin, Texas.

"Our attendance was really high," Justin Breton, Foursquare's head of marketing partnerships, said. "People felt that they did something different from the usual drinking and eating events at SXSW."

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The power lunch is dead

In general, the idea of interrupting a day's workflow to entertain a client over lunch is becoming less popular.

"Running a startup, I rarely have time for a full sit-down lunch meeting in order to network and continue building our business," Adrian Aoun, the CEO and founder of the artificial-intelligence-focused healthcare startup Forward, told Business Insider. "Many times I resort to eating a quick lunch at my desk, but as the founder of a startup that's health-focused, I know all too well how detrimental being sedentary all day can be. For this reason, I make almost all my meetings walking meetings.

"I even ask my office manager not to schedule a conference room so it forces good behavior. I find walking meetings to be much more productive because you have to focus and can't be distracted by your phone or laptop."

The trend of sweatworking is certainly more common among tech or media companies, where employees tend to be more willing to stray from tradition. But even on Wall Street, today's business lunches pale in extravagance compared with the meetings bankers held before the recession. Many businesses are becoming more image-conscious and, along with that, more cautious about appearing wasteful.