Write a 5-sentence article prompt that centers on the IV Kore BJJ Association In-House Tournament preview. Begin with a vivid scene of athletes warming up, then introduce the event details (date, venue, registration deadlines) as context. Explore how sports psychology can inform competitors’ focus, preparation, and resilience in a local, community-driven setting. Include practical, reader-facing tips for pre-competition routines and spectator etiquette that enhance the experience for all. Conclude with a forward-looking note on what this event reveals about growth, training, and teamwork in martial arts.