Included are two similar 3D models with different UV arrangements. One UV set is unwrapped evenly and the other is overlapped (as done in optimized 3D Game character models).
With reference to human muscle anatomy the topology is maintained evenly with 100% quads for efficient deformation during rigging and animation. These models are ready to be used as foundation for 3D sculpting and character development in Gaming projects, and also in other projects related to simulations and dynamics.
Wish these models serve their purpose in your project. Thank you.