🔥 How do our bodies stay warm?

Our bodies stay warm like a cozy blanket! 🌡️ Inside us, there's a tiny heater called metabolism. It turns food into energy, and that energy keeps us warm. When we run or play, our bodies make even more heat! 🏃‍♂️

Also, when it's cold, our skin gets little bumps called goosebumps to help trap warm air close to our bodies. And don’t forget—wearing warm clothes helps too! 🧥

Our bodies stay warm thanks to metabolism—a process where food is turned into energy. This energy heats us up like a furnace! 🔥 Muscles also produce heat when we move, which is why exercise warms you up.

Blood vessels near the skin can tighten (vasoconstriction) to keep heat inside when it's cold. Shivering is another trick—tiny muscle movements create extra warmth! ❄️→🔥

Fun fact: Blubber (fat) keeps whales warm in icy oceans—just like our body fat helps us!

The human body maintains warmth through a balance of heat production and heat conservation. Here’s how:

• Metabolism: Cells break down glucose (from food) to release energy—60% becomes heat!
• Muscle activity: Exercise or shivering generates heat via rapid muscle contractions.
• Blood flow: Vessels constrict (cold) or expand (hot) to regulate heat loss.
• Insulation: Subcutaneous fat and hair trap heat like a thermal layer.

The hypothalamus (brain’s thermostat) constantly adjusts these processes. ❄️🔥