His mental gymnastics are legendary.
Gymnastics was a significant part of the physical education curriculum.
She instructed certain of her favourites in gymnastics and athletics, as a useful training for war.
Apart from these verbal gymnastics, Diodorus did not differ from the Megarian school.
He was educated at Duisburg, Zurich and Bonn, where he distinguished himself by gymnastics as much as by study.
I read the rest and it is more verbal gymnastics.