asana

John J. Rateyの "SPARK" を読んでいます。

Learning the asanas of yoga, the position of ballet, the skills of gymnastics, the elements of figure skating, the contortions of Pilates, the forms of karate--all these practices engage nerve cells throughout the brain. Studies of dancers, for example, show that moving to an irregular rhythm versus a regular one improves brain plasticity.
"asanas" は後に続く"the position of ballet" 等々からヨガのポーズを示していると推測できますが、辞書で確かめます。

・Oxford English Dictionary: A posture adopted in performing hatha yoga.: The course includes basic asanas, pranayama and lectures on higher aspects of yoga.

・Collins Dictionary: any of various postures in yoga: At intervals, she stopped to explain, `Of course, I cannot do this asana now, because I am pregnant.
・Vocabulary.com: An asana is a specific yoga position. Your favorite asana in yoga class might be "corpse pose" at the end, when you just lie there and breathe.
Anyone who's taken a yoga class is familiar with the term asana, which simply means "pose" or "position." There are 84 classic asanas in yoga, and even more variations on them. When a yoga class does an asana together, the students position their bodies in a particular way, often holding the asana as they breathe. In Sanskrit, āsana means "seat" or "manner of sitting."