TOKYO — At the end of a long day at work in the offices of Japan’s professional baseball league, Asumi Fujiwara returned to her apartment and changed into pajamas. She wanted to get in a light workout before going to bed, so she placed her vinyl yoga mat on the floor in front of the toilet, rolling it past the single kitchen burner and the one-slot toaster and toward the foot of her desk.After a bit of stretching, she stood to get into the warrior position. Instead of extending her arms fully, though, she pulled her elbows into her sides. “I n …
