Jeff Zwiefel Joins North Castle Partners After Long Career at Life Time

The longtime Life Time president will serve as an advisor, helping private equity firm North Castle identify opportunities in fitness, longevity and recovery

After recently closing a chapter on a two-decade-plus career at Life Time, Jeff Zwiefel is now joining private equity firm North Castle Partners, which focuses on health and wellness businesses, as an advisor.

In his role, Zwiefel will collaborate with the North Castle team, bringing his experience and industry knowledge to determine and evaluate worthwhile investment opportunities, focusing on fitness, longevity and recovery.

“Over the course of my career, I’ve had the privilege of working with many outstanding leaders across the health, wellness and performance industry, and North Castle has long stood out as one of the most thoughtful and respected investment firms in the space,” Zwiefel said. “Their commitment to backing mission-driven companies that help people live healthier, stronger lives is deeply aligned with the work I’ve been passionate about for more than three decades.”

Zwiefel departed Life Time in January, after a long tenure as president and chief operating officer, during which he helped facilitate the brand’s transition from a high-end fitness operator into a more all-encompassing luxury wellness and lifestyle club.

More recently, he led Life Time’s Miora program, a clinic focused on longevity, performance and proactive health that offers protocols including GLP-1s. That concept is set to scale this year across several markets.

Now, Zwiefel joins North Castle to help scale and enhance its portfolio, which includes current and previous investments in brands such as Therabody, Crunch Fitness franchisee CR Fitness, SLT, Barry’s and WellnessSpaceBrands, formerly HydroMassage.

“Jeff is one of the most accomplished operators in the health and wellness industry,” said Jon Canarick, the managing partner of North Castle.

“His experience aligns with many of our focused investment categories,” Canarick added. “With nearly 50% of our portfolio companies being multi-unit service-based retail and/or fitness and recovery products, Jeff as one of the most experienced and proven executives in the categories is uniquely positioned to assist North Castle in driving value.”