What Happens When We Have Fever

We need to produce an original article 600-900 words, using only safe HTML tags: h2, h3, p, ul, ol, li, strong, em. No markdown fences. No mention of AI generation. Should be SEO-friendly for keyword "What Happens When We Have Fever". Use natural headings. Use the context provided where useful: includes phrases like "Why Do", "Discover", "Fevers", "To", "Explore the courses in Heath at Murdoch to learn more about the effects of diseases on human health.", "Fevers", "In this video", "Why Do". We can incorporate some of these phrases naturally. We must ensure word count 600-900 words. Let's aim around 700 words. We need to use only allowed tags: h2, h3, p, ul, ol, li, strong, em. No other tags like div, span, etc. Also no headings h1? Not specified but allowed? They only listed h2, h3, p, ul, ol, li, strong, em. So we should not use h1. Use h2 for main sections, h3 for subsections. We need to avoid unsupported claims. Provide factual info about fever: definition, mechanisms (pyrogens, hypothalamus), benefits, symptoms, when to seek care, treatment, misconceptions. We can include a brief mention of Murdoch University courses: "Explore the courses in Heath at Murdoch to learn more about the effects of diseases on human health." That phrase can be inserted as a sentence maybe within a p tag. We need to embed the keyword "What Happens When We Have Fever" naturally maybe in title? But we cannot use h1; maybe we can use h2 as title: "What Happens When We Have Fever". That's okay. Use that as h2. We must not mention AI generation. Now produce article with around 700 words. Let's draft:

What Happens When We Have Fever

Introduction...

Then sections: h2 maybe "Understanding Fever", h3 "How the Body Raises Temperature", h3 "Common Causes", h2 "Physiological Effects of Fever", h3 "Immune System Activation", h3 "Metabolic Changes", h2 "When Fever Is Helpful and When It Is Not", h3 "Benefits of Moderate Fever", h3 "Risks of High or Prolonged Fever", h2 "Recognizing Symptoms That Need Medical Attention", h2 "Managing Fever at Home", h3 "Hydration and Rest", h3 "Use of Antipyretics", h2 "Learn More About Disease Effects on Health", p with Murdoch reference. Make sure word count 600-900. Let's write about 750 words. We need to count approximate words. Let's write and then estimate. I'll write paragraphs of about 80-100 words each. Need maybe 8-9 paragraphs. Let's draft:

What Happens When We Have Fever

A fever is a temporary rise in body temperature that usually signals an underlying illness or infection. While many people view it as an uncomfortable symptom, fever is actually a coordinated response orchestrated by the immune system. Understanding what happens when we have fever helps us recognize when the reaction is beneficial and when it may require medical attention.

Understanding Fever

Normal body temperature for most adults ranges from about 36.1°C to 37.2°C (97°F to 99°F). The hypothalamus, a small region in the brain, acts as the body's thermostat. When pyrogens—substances released by invading microbes or by the body's own immune cells—reach the hypothalamus, they trigger the release of prostaglandins that reset the thermostat to a higher set point.