Muscle tension can be described as extended partial contractions or over shortening of muscles which can cause persistent low-level aches and pains. Muscle tension is typically caused by the physiological effects of stress and can lead to episodes of back pain. Muscle tension is often accompanied by other coinciding effects such as muscle twitching and muscle cramps. It is most commonly induced under the influence of heavy dosages of stimulating psychedelics compounds, such as LSD, 2C-E, DOC, and AMT. However, it can also occur under the influence of certain GABAergic depressants such as GHB and phenibut.