noun
breech correction exercises; prenatal exercises to turn a breech baby
Refers to a set of exercises performed during pregnancy to encourage a breech baby to turn into the head-down position before birth. Often associated with traditional Japanese practices.
逆子体操を毎日続けたら、赤ちゃんが頭を下にしてくれた。
After doing breech correction exercises every day, the baby turned head-down.
助産師に逆子体操のやり方を教えてもらった。
I learned how to do breech correction exercises from my midwife.
Compound of 逆子 (さかご, 'breech baby') and 体操 (たいそう, 'exercise'). The term is straightforward and modern, with no obscure historical derivation.