A look at using Maya Muscle to create a simple bicep muscle system from Luiz Philippe Moreira, who shows how to use the spline deformer on geometry to create a simple flexing muscle in a character’s arm.

A tutorial on using the spline deformer on custom geometry to create muscle flexing and stretching behavior

Maya Muscle is a skin deformer used in character rigging providing a more realistic skin deformation, adding muscle squash, stretch, and even jiggle to a joint system.

Luiz demonstrates creating a muscle in a simple set up covering the basics for using Maya Muscle and the important points for more complex set ups, showing how it might be incorporated with a more complex example in the end.