Watch Movies2Watch. Love is spontaneous, illogical, and immaterial. Modern science, studying the nature of this phenomenon, has discovered fantastic changes in the brains of people in love - love suppresses the feeling of fear, negative emotions, and criticism. Why does a person in love have an increased pulse and breathing rate? Biologists' research indicates that love is like drug intoxication. Chemists claim that we feel love due to the release of certain hormones into the blood. However, both admit that Love cannot be explained only by science.