Human is a creature with the highest degree. With an extraordinary level of intelligence human beings are able to become the top of the food chain. But apparently, humans have weaknesses. This weakness arises from a sense of fear for something. According to experts fears decline through DNA which means there are many humans born to fear something.
Heights
The fear of heights is caused by the imbalance of gravity in the ear. The ear as one of the five senses responds to the difference in height between you and the ground. When there is an altitude difference that is beyond normal then your body will feel panic because the brain responds to this abnormality. According to the expert, this phobia arises when the baby has motor skills and perception of space and distance.
Spiders
Fear of this 8-legged creature can not be separated from the role of our ancestors. In ancient times, the bite of the non-venomous tarantula was dangerous enough. Experts have observed that female infants tend to be four times more fearful than male infants.
Small Spaces
Claustrophobia is not a fear of santa clause (spongebob joke). Human instincts come out when he feels cornered. The natural response is to try to avoid the problem and go as far as possible. This is what causes humans to feel uncomfortable in the narrow space because there is no option to avoid problems.
Blood
Instinct is a major problem as well as an important point in human safety. Why other people's blood scares us or makes us dizzy. The logic is that blood is part of the human body. When this object is not in place then the brain will be wrong to respond. But what is clear is that when a person sees blood then the brain understands that someone is hurt. It has been a part of human hunting for centuries.
The Dark
Sangat lucu bila kita memahami bahwa manusia tidak takut melihat hantu namun manusia takut berada dalam kegelapan. Pemicunya adalah kita tidak mengetahui apa yang ada disekeliling kita. Panca indra kita terbatas dan inilah yang membuat segala keraguan terpancar. Otak kita mulai berhayal akan makhluk aneh yang akan menyerang dan membuat mata kita melihat bentuk yang sesuai hayalan.