The core of improv is spontaneity and collaboration, where performers rely on quick thinking, active listening, and the principle of "Yes, And..." — agreeing with and building on what others offer in the scene. This creates a dynamic and unpredictable performance. Key elements include embracing mistakes as opportunities for creativity, developing characters and relationships on the fly, and focusing on group collaboration rather than individual performance. Ultimately, improv is about having fun, staying present in the moment, and creating an engaging experience for both performers and audiences.