A．It can exercise your muscles．
B．It can relax body and mind．
C．It can cure some diseases．
D．It can slow your breathing．

A．One hour after meal．
B．Immediately after meal．
C．Half an hour before meal．
D．Two hours after meal．

A．Keep practicing until you can do them．
B．Skip such difficult poses．
C．Ask your teacher for help．
D．Change them so that you can do them．