CAROL Bike Integrates Flex’s HSA/FSA Payment Solution to Make Science-Backed REHIT Training More Accessible.
CAROL Bike, the world’s only AI-powered exercise bike delivering Reduced Exertion HIIT (REHIT), has announced a strategic partnership with Flex, a leading HSA/FSA payment solution. This collaboration aims to make CAROL’s science-backed fitness technology more accessible to consumers across the United States.
With this partnership, CAROL Bike customers can now conveniently use their Health Savings Accounts (HSAs) and Flexible Spending Accounts (FSAs) to purchase the bike, making evidence-based fitness solutions more financially attainable. By integrating Flex’s intuitive payment platform directly into CAROL’s checkout process, the two companies are eliminating financial barriers and enabling more individuals to access a clinically validated, highly efficient cardio workout.
“CAROL Bike delivers the most effective and efficient way to improve cardiovascular health, allowing users to achieve superior results in just 5 minutes per session,” said Ulrich Dempfle, co-founder of CAROL Bike. “By partnering with Flex, we’re making it easier for more people to invest in their long-term health using pre-tax dollars, ensuring that cutting-edge fitness is both accessible and affordable.”
Flex, a pioneer in simplifying health and wellness payments, continues to expand its reach by partnering with forward-thinking brands like CAROL Bike, which are revolutionizing the fitness industry with scientifically-backed innovations.
“Our mission at Flex is to help consumers maximize their HSA/FSA benefits while accessing the best in health and wellness innovation,” said Sam O’Keefe, CEO of Flex. “By teaming up with CAROL Bike, we’re not just streamlining payments—we’re supporting a brand that is redefining what’s possible in home fitness.”
CAROL Bike’s REHIT protocol, developed in collaboration with leading exercise researchers, has been shown to improve cardio fitness up to two times more effectively than regular exercise while requiring 90% less time. With just two 20-second sprints, CAROL Bike stimulates rapid physiological adaptations that enhance VO2 max, improve insulin sensitivity, and support overall metabolic health. Now, with Flex’s payment solution, customers can invest in their fitness with greater ease and flexibility.
CAROL Bike is the only exercise bike scientifically proven to deliver the benefits of Reduced Exertion HIIT (REHIT), a breakthrough fitness protocol designed to maximize cardio health in the shortest possible time. Co-founded by Ulrich Dempfle, CAROL Bike was developed in partnership with leading exercise scientists to bring lab-validated fitness to everyday users. With just 5-minute workouts, CAROL Bike delivers superior health benefits, making it the most efficient cardio solution available. Learn more at carolbike.com.
About Flex
Flex simplifies health and wellness payments by enabling businesses to accept HSA/FSA funds with ease. By unlocking access to $150 billion in annual HSA/FSA spending, Flex helps merchants boost revenue, increase cart sizes, and improve customer retention. Flex’s seamless integration is transforming the way consumers and businesses connect in the health and wellness space. Start today at www.withflex.com.