Dancercise mixes dance and exercise with the aim of developing a physical and mental core.
American Terez Nelson is former professional ballet dancer, who now teaches a dance exercise class.
On retiring from ballet, she moved to Ireland and dabbled in interior design. After some years away from dance, she returned to work as a dance and exercise instructor.
American modern dance techniques, the principals of yoga, isolation, jazz, dynamic movement and exercise.
The class is not just about the body, but also about the mind. Much of what Terez Nelson teaches is inspired by the Martha Graham technique.
Some of the women participants of the course talk about the classes and what they get out of them. The emphasis is not about weight loss but rather about exercise and achieving better posture.
'Tangents' broadcast on 14 March 1974. The reporter is Áine O'Connor.