Foreplay in sex is considered a perfect preparation step, bringing the body to separate pleasures. According to experts, foreplay includes a series of stimulating actions, such as hugging, kissing, caressing, or undressing between two people before starting to do "it".

Love is not simply an invisible emotion from the heart, but is also governed by real chemicals in the brain. Scientists have conducted many studies on love, specifically attraction, attachment, happiness or sexual arousal,... Let's find out the truth about love from a scientific perspective through the quiz below.