A research project from Utrecht University show how you can simulate how muscles are build up based on traits of the environment and optimal speed.
Researchers: Thomas Geijtenbeek, Michiel van de Panne, A. Frank van der Stappen
Links[1] https://explorable.com/ideas/evolutionary-algorithms-simulate-muscles [2] https://explorable.com/ideas [3] http://xpl.be/1gPdOoh