Source: CDC (NIOSH)
CDC/NIOSH heat-illness guidance describes conditions like heat exhaustion and heat stroke, and notes that heat stress plus prolonged physical exertion can contribute to rhabdomyolysis (rapid muscle breakdown), alongside dehydration and electrolyte issues.
Why it matters for lifters
Outdoor conditioning, garage-gym sessions, and heat waves can turn pushing through into a dangerous situation. Treat hydration, pacing, and recovery as performance variables.
What to watch next
Watch for cramps, dizziness, heavy sweating, weakness, confusion, or very hot skin. Do not train alone in extreme heat. If heat stroke symptoms show up, treat it as an emergency and cool the person fast while calling for help.
Health disclaimer: This article is for informational purposes only and is not medical advice. If you have symptoms or medical concerns, talk to a qualified health professional.