But as you experience the downward release of tension from the diaphragm through the chest, shoulders, and throat, you will gain the intelligence necessary to release the muscles of the neck and create space in the cervical vertebrae. (yogajournal.com)
If you can use masturbation purely to bring physical release of tension with some sexual enjoyment thrown in, without that being addictive or fantasising about another person without their consent and without using pornography then personally I don't have a problem with it. (premierchristianity.com)
Here are the Webster possibilities:» a (1): to eject or impel or cause to be ejected or impelled by a sudden release of tension (2): to drive forth or cause to be driven forth by an explosion (3): to drive forth or cause to be driven forth by a sudden release of gas or air (religion.blogs.cnn.com)