According to Domeena Renshaw, a researcher at the Department of Psychiatry and Behavioral Neuroscience at Loyola University (USA), falling in love generates in the body a veritable "flood" of chemicals that make us feel good, and that are also responsible for physical reactions such as flushing of the cheeks, sweating of the palms of the hands and the acceleration of the heartbeat. Specifically, the cerebral "cocktail" of lovers is made up of dopamine, adrenaline and norepinephrine . Dopamine triggers feelings of euphoria, while adrenaline and norepinephrine make the heart pound and keep us awake.
On the other hand, scanning the brains of people in love with MRI has found that the feeling of love increases blood flow to the pleasure center of the brain in a similar way to what happens when we become addicted to drugs. To this is added that when we fall in love, serotonin levels fall in our neurons, which explains why at the beginning of a relationship "we don't have eyes for anything other than our partner," Renshaw clarifies.
