Subspace (also sub space, headspace, flying, or floating) is a specific state of mind that a submissive may enter, particularly after intense activities and/or (depending on the person) intense pain play, characterized by euphoria, bliss, a strong feeling of well-being, or even a state similar to intoxication. Thought to be related to the release of endorphins in the brain. The euphoria associated with subspace may last for hours or sometimes even days after the activity ceases.
Subspace is a metaphor for the state the bottom’s mind and body is in during a deeply involved play scene. Many types of BDSM play invoke strong physical responses. The psychological aspect of BDSM also causes many bottoms to mentally separate themselves from their environment as they process the experience. Deep subspace is often characterized as a state of deep recession and incoherence. Deep subspace may also cause a danger in newer bottoms who are unfamiliar with the experience, and require the dominant to keep a careful watch to ensure the bottom isn’t placing him or her self in danger. Many bottoms require aftercare while returning from subspace.
Subspace is a form of trance. Trance in its essence is a state of being, different from your “normal” state of being. During trance your mind excludes most of its input and concentrates on just one or only very few impulses, completely disregarding all others. Trance is the result of hormonal activity. Hormones are substances in your body, responsible for communication between the brain and the cortex and the rest of the body. For subspace a group of hormones, called “peptides” is important. Peptides are amino acids. Many look like morphine and have attributes, that can be compared to morphine. For subspace endorphins – a group of such peptides – are an important ingredient.