Anja Ali-Haapala, Gene Moyle, & Graham Kerr. (2021). ‘Stretch’ Cognitively and Physically: A Research on Older Adults’ Experiences of Taking Ballet Classes as an Anti-aging Method . ournal of nnovation in ocial cience, 2(1), 1–7. etrieved from http://8.218.148.162:8081/JISS/article/view/10