Fred Zülli and Esther Belser - Mibelle, Switzerland
When it comes to love we are all at the mercy of biochemical reactions in our body. Hormones such as phenylethylamine, oxytocin, dopamine, serotonin and endorphin play an import role in our behaviour. These "love hormones" control to a large extent our feelings such as happiness, excitement and the desire for sex.
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