NEW YORK, April 17, 2017 -- Interactive fitness devices enter a new phase of evolution today as Vi, the world's first voice-activated AI personal trainer, becomes commercially available. Created by LifeBEAM Labs, a leader in AI wearable innovations that has developed technology for NASA and the Air Force, Vi is built into biosensing earphones with beautiful sound powered by Harman Kardon. Vi brings consumer AI to the next level by adapting to a person's behavior, environment and physiology to deliver tailored, real-time coaching that makes workouts more fun, motivating and effective.