Millennials are shaking up these 7 industries

Payal Kadakia is the founder and executive chairman of ClassPass, a subscription service that gives users access to different fitness classes.

The 34-year-old dancer was having trouble booking and finding classes. She realized it would be much easier if all class schedules were in one place and created a program that offered just that.

"I was at that point in my career where I felt like my current job wasn't inspiring me," Kadakia, who at the time was working at Warner Music Group, told CNNMoney.

Users can choose from classes like yoga, boxing and cycling in their area, and pricing varies by market. ClassPass operates in 32 U.S. cities like Miami and Los Angeles, and eight international markets including London and Vancouver.

CNNMoney's Ahiza Garcia contributed to this report.