: to spread by metastasis â¦ all ten were primary brain cancers; that is, they had originated in the brain, and not metastasized there from elsewhere in the body.âPaul Brodeur, The New Yorker, 9 July 1990.
PNF stretching, or proprioceptive neuromuscular facilitation stretching, is a set of stretching techniques commonly used in clinical environments to enhance both active and passive range of motion in order to improve motor performance and aid rehabilitation.uring the 1960s, the physical therapy departments of several universities began offering courses in PNF and by the late 1970s PNF stretching began to be used by athletes and other healthy people for more flexibility and range of motion.
A Honor Society of Nursing (STTI) answered. Stretching is important to muscle health because it increases your flexibility and lengthens the area available for the muscles to contract. This flexibility makes it more comfortable to perform physical activity and allows the force of the muscle to be more effective.