Please Define the Following Terms or Concepts in No More

Please define the following terms or concepts in no more than two sentences, and give an example to support your definition.
A. Beginning T'ai Chi position
B. Fasting the heart
C. Chi
D. Grasp the bird's tail
E. Left-hand ward-off
F. Lift hands
G. Single whip
H. Starting posture
I. Winning by losing
J. Return to nature
K. T'ai Chi ch'uan
L. Yang
M. Yin
N. Wu-wei
O. Qigong