spasmolysis: the relaxation or relief of muscle spasms
easing: the act of reducing something unpleasant (as pain or annoyance)
teddy boys: a British youth subculture that first appeared in the 1950s; mainly from unskilled backgrounds, they adopted a pseudo-Edwardian dress code and rock'n'roll music; proletarian and xenophobic, they were involved in race riots in the United Kingdom