Teenager Ariel Martin is basically a professional lip-syncer who has built a 20 million-strong army of followers on the platform Musical.ly. That’s thanks to her charming, ostentatious hand gestures and confidence — and to the more than seven hours a day she spends making videos to songs like “Bubbly” by Colbie Caillat. Her enthusiasm for Musical.ly led her to be a major early adopter, who has helped lead to the service’s success. And she’s also vlogged for brands like Nordstrom, where she took viewers on her journey to buy a prom dress. Deciding to finish high school online, Martin now posts at least one Musical.ly video every day, two YouTube videos per week, plus a few weekly Facebook, Twitter, and Instagram updates. Talk about extracurriculars.