You can generate power by pivoting on your foot. Here is a clip from master Chen Zhonghua’s 2005 Taiji Tradition Camp in Victoria, BC, Canada.
Go here for more on this topic:
http://wujimon.com/2007/what-does-a-camera-tripod-have-to-do-with-taiji/
http://hunyuantaiji.livejournal.com/
Filed under: Power of Taiji, PushHands, Structure of Taiji, Taiji Video