Fear of height, spiders or snakes can be explained logically. But in front of small, innocent holes in honeycombs, lotus flowers or in Swiss cheese? According to a study by the University of Essex, 13 percent of the subjects actually suffer from this problem, which experts call trypophobia. The percentage was even slightly higher for women [18 percent] than for men [11 percent]. Find out in the video whether you are also affected and what evolutionary reason is behind the phenomenon.