"some kind of t'ai chi routine"

Tai Chi Chuan
Creative Commons Attribution Share AlikeTai Chi Chuan - Credit: Jakub Hałun
 Tai Chi Chaun (literal translation: "Supreme Ultimate Fist") is a Chinese martial art often practised for health reasons. A multitude of training forms exist, both traditional and modern, with most modern styles tracing their development to at least one of the five traditional schools: Chen, Yang, Wu/Hao, Wu and Sun.  Groups practise the slow motion routines together every morning in parks around the world, particularly in China.