# Chain Reaction Fitness & Nutrition > Gym offers spacious, clean environment with top-notch equipment and no crowds. Atmosphere centers on strong community vibe where people feel comfortable either focused or social. Open nearly 24 hours with flexible access and reasonable rates. Source: https://www.atly.com/location/Chain-Reaction-Fitness-Nutrition - Address: 588 San Mateo Ave, San Bruno, California, United States - Phone: +14153220969 - Website: http://www.chainreactionfit.com/ ## What people say - "I love my personal trainer; she's skilled and friendly." - "The gym has a wide variety of top-notch equipment." - "My personal trainer is skilled, friendly, and fun." ## Good to know - The gym is open 24 hours, allowing flexible workout times. - Membership programs are available at lower rates than other gyms. - Parking is free behind the gym before 8am and after 6pm. - The space is always clean and well-maintained. - Group classes are offered as an alternative to personal training. ## 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.