Aptive Pest Control Practice Test

Heat stress happens when your body can’t shed heat fast enough. Protective clothing that blocks moisture and air increases the body's heat load by trapping sweat and heat inside. Chemical resistant PPE is designed to block chemicals, but many of these garments are non-breathable, so sweat evaporates less and heat builds up, especially during warm weather or with hard work. That extra heat load makes heat stress more likely. Other options would help reduce heat stress—breathable gloves let heat escape, starting work in cooler morning hours lowers ambient temperature, and staying hydrated supports the body's cooling. So the factor that raises heat stress risk is wearing chemical resistant PPE.