Brynn Putnam is no stranger to building businesses. In 2010, she started Refine Method, the award-winning boutique fitness studio. Now, she's the Founder & CEO of MIRROR, tapping into the $14 billion dollar home fitness market with a connected fitness system that streams classes to users in-home, all via (you guessed it) a mirror. Putnam shares how she came up with the idea and built her first prototype, the surprising range of users who love the platform, and how her professional dancing career makes her a stronger CEO.