Rhabdomyolysis, or “rhabdo” for short, is not only experienced by wildland firefighters. Anyone working in extreme heat is at risk of heat stress and subsequent illness or injury. In this presentation, we will discuss rhabdo – what it is, what it’s not, and why it is important for firefighters to recognize its signs and symptoms. We will discuss high-risk activities as well as other high-risk behaviors for firefighters to consider that impact the body's ability to work for prolonged periods in the heat. We will also discuss ways to monitor hydration and proper progression for training to avoid developing rhabdo.