Have you ever wondered why the hell on Earth you get goosebumps when cold? Of course, the human body is a home to many untold mysteries, evolution for instance. We all know who our ancestors were, to a pretty much extent. Knowing more about our ancestors can actually help us take better care of our bodies. Some of our bodily features are related to the animals we are descendants of. Some of those are mentioned here.
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Images via YouTube
Place your arm on a flat surface. Bring your thumb and pinky finger close and tip your hand slightly up.
It's a VESTIGIAL muscle in your arm!
If Palmaris longus is present in the body, it means the ancestor mammals used all four legs for their everyday chores.
When the muscles surrounding the hair contract in the cold, the skin above the hair follicle rises and creates a bump.
The raised hair increases the space for the amount of insulation in furry mammals.