Did you know that the human body emits a faint glow, invisible to the naked eye? 🔬✨ This phenomenon, called *human bioluminescence*, is a byproduct of metabolic processes within our cells.

🔹 **How It Works**
As our bodies metabolize energy, they produce *reactive oxygen species*, which interact with molecules and generate tiny bursts of light. However, this glow is **1,000 times weaker** than what our eyes can detect.

🔹 **Scientific Discovery**
In 2009, Japanese researchers used **ultra-sensitive cameras** to capture this glow, proving that humans emit visible light. Interestingly, **our bioluminescence is strongest in the late afternoon** and weakest at night, following our metabolic cycles. The **face emits more light**, likely due to higher metabolic activity.

🔹 **Potential Medical Applications**
Since metabolic changes affect the intensity of this glow, researchers believe it could be used in **non-invasive health diagnostics** in the future.

While we may not glow like fireflies, our subtle light emission highlights the intricate biochemical processes that keep us alive! 🌟