Our top pick for the best YouTube channel for workouts is PS Fit (formerly PopSugar Fitness). It offers hundreds of workouts in different styles and difficulty levels, including cardio, weight training, dance, barre and HIIT. She's created playlists and yoga plans to align with your skill levels, goals and time. You can choose a 10-minute yoga practice, a guided meditation or a Foundations of Yoga class to teach you what the workout is all about. This is a great channel to start your day -- a 10-minute yoga practice can help you get centered before you jump into the workday.…