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[Vince Keegan]

There are always some questions for small things you encounter in your daily life. Here are 15 answers to things you've always wondered about.

1. Why do your fingers and toes get wrinkly in the shower?



Scientists have figured out why our fingers and toes get wrinkly during bath-time. This is because the outer layer of skin on your hands and feet — called the epidermis — is different than the skin on the rest of your body. The thicker layer of skin on your hands and feet contains more dead skin cells than other parts of your body. These dead skin cells soak up water like an efficient sponge, while thinner skin on the rest of your body is less affected. The good news is that wrinkled fingers and toes are a painless, temporary situation. The human body is amazing.

[Vince Keegan]

2. If our blood is red, why are our veins blue?



Skin absorbs blue light. Subcutaneous fat allows blue light to penetrate skin all the way to veins, so this is the color that is reflected back. Less energetic, warmer colors are absorbed by skin before they can travel that far. Blood also absorbs light, so blood vessels appear dark.

[Vince Keegan]

3. Why is the sky blue?



Much like our veins appear blue, it has everything to do with wavelengths and blue light. Blue light scatters more than the other colors in the spectrum because it travels as shorter, smaller waves.

[Vince Keegan]

4. What is it about showers and creative thoughts?



Our best ideas come to us in the shower because it frees your mind to wander and think of something else. If you are in a relaxed state of mind, your brain is most likely to give you your best, most creative ideas.

[Vince Keegan]

5. Why do we say "cheese" when we get our pictures taken?



The origin is unknown, but when you say "cheese," the act of saying the word turns the corners of your mouth lift up, your cheeks lift, and you show off a toothy grin. It looks like a smile, and since smiling is what we do in pictures, the instruction seems pretty practical.

[Vince Keegan]

6. Why Do Stores Blast Air At Entrances?



It is a fairly common occurrence to be blasted with air upon entering a store or mall. It is to keep the temperature in a building steady by preventing air from leaving or going in through an entrance. The jet of air is used to keep cold air out of the stores during the winter and to prevent cool air escaping during the summer. Air doors are also incredibly useful for stopping flying insects from entering a building by providing turbulent air that they cannot pass through.

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