# HOTWORX - Boulder, CO > Infrared sauna rooms with built-in TVs create a unique workout environment set to adjustable heat levels around 105 to 125 degrees. Small class sizes capped at three participants ensure personal space and safety during sessions. Members enjoy 24/7 access via phone, making visits flexible and convenient in a clean, introvert-friendly setting. Source: https://www.atly.com/location/HOTWORX---Boulder-CO - Address: 3000 Pearl St Suite 1600, Boulder, Colorado, United States - Phone: +17205759679 - Website: https://www.hotworx.net/studio/boulder ## What it is good for - Gyms — 9/10 ## What people say - "The gyms here are super clean with really friendly staff." ## Good to know - There is 2-hour free parking available in the building. - Class sizes are limited to 3 to ensure enough space for safe workouts. - The facility allows access anytime via phone once you become a member. - Classes refresh about once a month to prevent boredom. - There are many class options to choose from, and the classes are challenging. ## 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.