CrossFit offshoot for kids aims to get kids away from the screen and on their feet.

Kids will slide through a “Tunnel of Terror” and get slimy on “Mount Mud” in Tough Mudder’s new obstacle course for the 7-12 set. The endurance-challenge purveyor is partnering with European soft drink brand Britvic on Fruit Shoot Mini Mudder, with events planned for the U.S., the U.K. and Ireland. The concept caters to parents looking to pry kids away from screens and get them moving—there’s now a CrossFit offshoot for kids, starting with preschoolers—in ways that are challenging and fun.

At the same time, there’s growing interest in the benefits of childlike play for adults. Jump In!, a temporary immersive art installation by design studio Pearlfisher in London, is a free ball pit for adults. All slots for the two-week pop-up, meant to promote “the transformative power of play,” were quickly booked.

Image credit: Tough Mudder