Human life is filled with surprising and strange facts that often go unnoticed. Here are five weird ones:

1. Humans Glow in the Dark (But We Can’t See It)

Humans are bioluminescent, emitting a faint glow throughout the day. However, this glow is 1,000 times weaker than the human eye can perceive, so it’s invisible to us. Special cameras can capture this light, which is thought to fluctuate with our body’s metabolic rhythms.

2. Your Stomach Constantly Replaces It’s self

The lining of your stomach renews itself every three to four days. This is because the acidic environment in your stomach is so harsh that it would otherwise digest itself without this constant regeneration.

3. You’re Slightly Taller in the Morning

Due to the compression of your spinal discs from gravity throughout the day, you are slightly shorter in the evening than in the morning. When you sleep and lie down, the discs rehydrate and expand, making you regain some height overnight.

4. You Can Produce Enough Saliva to Fill Two Swimming Pools

Over the course of a lifetime, the average person produces enough saliva to fill about two swimming pools. This equates to around 26,000 liters of saliva, which helps in digestion, cleaning teeth, and preventing infections.

5. Your Brain Can Power a Lightbulb

The human brain generates around 20 watts of electrical power when active, which is enough to power a small lightbulb. This electrical energy is created through the chemical reactions of neurons firing in the brain.

These facts highlight how incredible and strange the human body can be, often performing miraculous functions without us even realizing it.