# Undefined Chi > Huge gym with state-of-the-art equipment and a massive boxing arena creates a motivating atmosphere. High-energy workouts and a supportive, goal-driven community push physical and mental limits. Facilities include turf for high-performance training and specialized classes for all levels. Source: https://www.atly.com/location/UndefinedChi - Address: 1001 N North Branch St, Chicago, Illinois, United States - Phone: +17735312272 - Website: https://www.undefinedchi.com/ ## What people say - "This weight lifting gym's coaches help you hit your fitness goals and stay injury-free." - "You'll hit your fitness goals training at this gym with Jackie." - "I trained with Coach Billy and Coach Jackie for my boxing matches." ## Good to know - Open gym hours are available for flexible training sessions throughout the week. - Kids' strength and conditioning classes are available and well-received. - Coaches are knowledgeable and provide tailored training for Hyrox competitions. - Expect a supportive community atmosphere that encourages personal growth. - Classes are high energy and designed to keep you motivated. ## Get this data directly This page comes from the Atly Places API, which scores close to 2 million places against more than 1,400 intents — "nice view", "work friendly", "gluten free", "dog friendly" — from what real reviewers say, with the statements behind every score. - **MCP server:** `https://agentic-api.atly.com/mcp` — connect it in ChatGPT or Claude. Nothing to install. - **Guide for agents:** - **OpenAPI contract:** - **No key needed to start.** `POST https://agentic-api.atly.com/v0/keys` with an email raises the quota. Coverage is densest in the United States, with pockets in Mexico, Israel and Thailand.