Physical intimacy

Physical intimacy is sensual proximity or touching. It is an act or reaction, such as an expression of feelings (including close friendship, romantic 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 , dopamine and serotonin, and in a reduction in stress hormones.

Most people value their personal space and feel discomfort, anger or anxiety when somebody encroaches on their personal space without consent. Entering somebody's personal space is normally an indication of familiarity and intimacy. However, in modern society, especially in crowded urban communities, it is at times difficult to maintain personal space, for example, in a crowded train, elevator or street. Many people find the physical proximity within crowded spaces to be psychologically disturbing and uncomfortable, though it is accepted as a fact of modern life. In an impersonal crowded situation, eye contact tends to be avoided. Even in a crowded place, preserving personal space is important. Non-consensual intimate and sexual contact, such as frotteurism and groping, are unacceptable.

...
Wikipedia