In the "Last To STOP JUMPING Challenge! (Trampoline Park!)", Ranz and Niana head to a trampoline park to see who can keep jumping the longest. The challenge is filled with high-energy moments as they bounce around, compete in fun activities, and try to outlast each other. Their playful rivalry, funny antics, and reactions to the trampoline tricks make for an entertaining experience. The video showcases their sibling bond and highlights the fun of physical activity in a lively environment. Would you like to know more about their favorite moments or any specific tricks they attempted?