When Cassey Ho fused traditional Pilates moves with pop music and uploaded a video of her exercise class to YouTube, she had no idea she was starting a fitness revolution.
Now, even pop star Taylor Swift is a fan and Ho is the owner of an entirely self-funded health and fitness empire, with her YouTube channel Blogilates at the center.
Ho, who calls her POP Pilates workouts a "dance on a mat," told CNBC's "Street Signs" that the secret to her success was making exercise fun.
"Once you start making exercise fun it becomes a lot less about the reps and losing weight, and more about having a good time," the 29-year-old Vietnamese-American says.
Blogilates, which Ho launched in 2009, is currently the number one female fitness channel on YouTube, having clocked up more than 300 million video views and over three million subscribers.