Exercise in the Heat: How Athletes and Workers Can Prevent Heat Stress
Whether you’re an endurance athlete logging miles in the summer sun or a construction worker putting in long hours outdoors, heat stress is a real and rising concern. With 2024 ranking among the hottest years on record, it’s more important than ever to recognize the signs, know how to prevent them, and use proven strategies to keep your body safe.
What is Heat Stress?
Heat stress occurs when the body can no longer regulate its core temperature. Unlike injuries that affect everyone in the same way, heat stress is highly personal—it depends on your hydration, fitness, acclimatization, medications, and even whether you slept well the night before. According to surveys, 4 out of 5 Americans have experienced heat stress, yet many don’t recognize the symptoms until it’s too late.
Early Warning Signs of Heat Stress
- Heat Rash: Red, itchy blisters caused by clogged sweat ducts.
- Heat Cramps: Painful muscle cramps, often occurring at night after sweating heavily.
- Heat Exhaustion: Nausea, headache, dizziness, weakness, and mood changes.
- Heat Stroke: A medical emergency marked by confusion, fainting, and the body’s inability to cool itself. Immediate action within 30 minutes is critical.
Prevention: Hydrate, Rest, and Acclimatize
One of the most effective strategies is gradual acclimatization. Just like athletes should avoid jumping into a hot midday run unprepared, new workers or returning athletes must slowly increase heat exposure over 1–2 weeks. Combined with proper hydration, rest, and shade, acclimatization is the foundation for heat safety.
Want more ideas for athletes in the heat? Check out our blog on How to Stay Hydrated in the Heat and Tips for Training and Racing in the Heat
Proactive Cooling Strategies
Cooling products originally designed for industrial workers—like cooling sleeves, skull caps, vests, and towels—are crossing into the athletic world. These tools leverage evaporative cooling or phase-change technology to keep body temperature in check. They’re lightweight, reusable, and surprisingly affordable, with options starting under $50 and lasting multiple seasons when cared for properly.
The Taco Method: A Cooling Hack You’ll Remember
One of Ergodyne’s most memorable teaching tools is the “Taco Method” (Tarp Assisted Cooling Oscillation). If someone collapses from heat stroke, you can lay them on a tarp, pour ice water over them, and wrap them up—just like a taco. This simulates an ice bath in remote settings and can be lifesaving until medical help arrives.
Key Takeaways
- Stay hydrated with water and electrolytes.
- Prioritize rest and shade whenever possible.
- Use cooling gear proactively—sleeves, towels, and vests can extend safe performance time.
- Look out for heat stress symptoms in yourself and others.
Heat stress is preventable. By taking proactive steps, athletes and workers alike can stay safe, perform better, and protect long-term health.
For more information and practical resources, visit Ergodyne’s Heat Stress page.
Here’s the products we discussed in the episode that Lexi recommended:
Cooling Towel (their most popular item)
