medical myths 1-5

🧠 1. We only use 10% of our brains

False. Brain imaging shows we use virtually all parts of our brain, even when we're at rest. Different tasks activate different regions, but no part is completely inactive.

💧 2. You need to drink 8 glasses of water a day

Kind of a myth. Hydration needs vary per person. We get water from food and other drinks too. The key is to drink when you're thirsty and listen to your body.

🌡️ 3. Fevers above 104°F will cause brain damage

Not exactly. High fevers are uncomfortable, but brain damage usually doesn’t occur unless the fever exceeds 107.6°F (42°C), which is rare and often due to heat stroke, not infection.

🧽 4. You can “sweat out” toxins

Nope. Sweat is mostly water, salt, and small amounts of waste—your liver and kidneys do the heavy lifting when it comes to detoxing. Saunas and sweat sessions feel good, but they don't "cleanse" your body of toxins.

❄️ 5. Cold weather makes you sick

Indirectly, maybe. Cold weather doesn’t cause colds or flu—but we spend more time indoors during cold months, increasing the chance of virus spread. Also, dry air can dry out nasal passages, making infections more likely.