Sworkit offers free workouts for kids as part of their youth initiative. Sworkit is used across the world in schools and youth organizations in an effort to increase self-esteem, lower childhood obesity, and to get kids moving and having fun! Your child can choose activities for strength, agility, flexibility and balance, warm-ups, cooldowns, and more. Once kids choose a workout, they also have the option to add music to it through the site, Spotify, or Apple Music. Check it out at https://app.sworkit.com/collections/kids-workouts.