Most clients attend its spin classes in the comfort of their own homes. They've never even met an instructor in the flesh.
Peloton is a high-tech indoor cycling company that was recently valued at around $1.25 billion after closing a $325 million financing round. Its core products are an indoor bike and a subscription-based video streaming service.
And as the business expands, it's becoming a real threat to rivals like SoulCycle and Flywheel.
Here's everything you need to know about the billion-dollar fitness company.