Physical intimacy is sensual proximity or touching. It is an act or reaction, such as an expression of feelings (including close friendship, love, or sexual attraction), between people. Examples of physical intimacy include being inside someone's personal space, holding hands, hugging, kissing, caressing, and sexual activity. It is possible to be physically intimate with someone without actually touching them; however, a certain proximity is necessary. For instance, a sustained eye contact is considered a form of physical intimacy, analogous to touching. When a person enters someone else's personal space for the purpose of being intimate, it is physical intimacy, regardless of the lack of actual physical contact. Most people partake in physical intimacy, which is a natural part of interpersonal relationships and human sexuality, and research has shown it has health benefits. A hug or touch can result in the release of oxytocin, dopamine, and serotonin, and in a reduction in stress hormones.

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