4 Right-click the Top viewport and press Page Up to select Bip01 L Clavicle
and rotate it −20 degrees about the Y axis.
This should prevent the arm from passing through the head.5 In the same viewport, press Page Down three times to select Bip01 L Hand.
Rotate it approximately −90 degrees about the X axis so the palm is facing
down.776 | Chapter 5 Character-Animation Tutorials