The discipline works with the idea that energy and emotions form patterns and work in waves.
Each one-hour session starts with a warm-up and passes through five stages: flowing, stacatto, chaos, lyrical and stillness.
"They are all related to different emotions and different parts of life. It's a way of coming into one's centre. It can be cerebral, or it can just be a wonderful dance," Hatherley said.
5Rhythms teachers have committed to come to Whanganui every two months and focus on one stage at each visit.
They have made three visits already, and this month the teacher will be Croatian woman Romana Soldo and the focus will be the lyrical rhythm - "my soul, my offering".
"It's wonderful that it connects with spring," Hatherley said.
++The September 15 workshop costs $55, or $45 for Community Services Card holders. For payment details email alex@5rhythms.co.nz. Anyone wishing to attend or to go to a Sunday session needs to ring convenor Robin Williamson first, on 021 02333 863.