HumanIK Pull and Resist attributes

To open the Pull and Resist attributes

The Pull attributes let you determine the extent to which certain body parts are affected when other parts of the body are moved.

Hips Enforce Gravity
Lets you set the percentage of resistance for the hips. Forces the hips of the character between its feet. By default, Hips Enforce Gravity is set to 60%.
Note: You must set Hips Stiffness to a value other than zero to take advantage of the Enforce Gravity setting. See HIK Stiffness attributes.
Left/Right Knee Max Extension
Use these settings to damp the leg as it fully extends, to prevent knee and limb snapping. The higher the value, the more gradually the limb extends. By default, a value of 50 corrects most limb snapping.
Left/Right Elbow Max Extension
Use this setting to damp the left or right arm as it fully extends, to prevent elbow and limb snapping. The higher the value, the more gradually the limb extends. By default, a value of 50 corrects most limb snapping.
Left/Right Knee Compression
Changes the stiffness of an extended leg as it bends. At 100% (full effect) the extended leg does not bend, but instead pushes the hips of the character, moving the character.
Left/Right Elbow Compression
Changes the stiffness of an extended arm as it bends. At 100% (full effect) the extended arm does not bend, but instead pushes the character's chest, moving the character.