1. Your Skin Has Four Colors
All skin, without coloring, would appear creamy white. Near-surface blood vessels add a blush of red. A yellow pigment also tints the canvas. Lastly, sepia-toned melanin, created in response to ultraviolet rays, appears black in large amounts. These four hues mix in different proportions to create the skin colors of all the peoples of Earth.

2. Body Position Affects Your Memory
Memories are highly embodied in our senses. A scent or sound may evoke a distant episode from one’s childhood. The connections can be obvious or inscrutable. A recent study helps decipher some of this embodiment. Episodes from your past are remembered faster and better while in a body position similar to the pose struck during the event.

3. Loneliness Is Physically Painful
Ok, you probably knew that. But do you know why? Researchers at the University of California found that the feeling of loneliness is actually processed in the same part of your brain as physical pain, called the anterior cingulate cortex. This explains the human desire to fit in, to seek out companionship and helps to understand the power of peer pressure.

4. Some Women See More Colors
A study from the University of California shows that up to 50% of women carry four types of color receptors, or iodopsins, rather than the usual three. Normal visioned people will look at a rainbow and see seven different colors, while one with four receptors will see around 10 colors. The reason this happens in woman is that the red and green receptors are located on the X chromosome, while the blue is on the Y. The red and green receptors can be slightly shifted allowing for a greater range of color vision. There are also a small number of women who will have both kinds of red and green, resulting in 5 color receptors. This is also why color blindness is much more common in men than women.

5. Eating Your Boogers May Be Good For You!
Your nasal mucus (booger) is designed to filter out airborne contaminants and so eating it has long thought to be bad for you, but recent study shows that it may actually help to boast your immune system by introducing those contaminants in small amounts, training your body to recognize and fight against them. But don’t worry, you don’t have to start picking your nose. You have most likely already eaten your boogers, even if you are unaware of it. Mucus accumulated in your nasal passages is often directed backwards and down your throat by the motion of your cilia (hair like structures on your cells used to move things). Yum!