Eric Walker added The DIY Scientist, the Olympian, and the Mutated Gene — ProPublica to Muscular system

Eric Walker added "Muscles" to Muscular system

Eric Walker added Muscular system - Wikipedia to Muscular system

Eric Walker added How to Speed Up Muscle Repair to Epigenetics and Muscular system

Eric Walker added Muscular system - Wikipedia and How to Speed Up Muscle Repair to Muscular system, and added Muscular system to Physiology

Eric Walker added a number of topics to Physiology, and added Physiology to Biology