What are the 3 main muscle groups?

Answer:
Smooth Muscle (the "skin" of your organs), Cardiac muscle (the muscles within the heart), and the Skeletal muscle (the muscles that allow you to move, i.e., the muscles you can work out.)
First answer by ID1199438905. Last edit by Blu rz bry. Contributor trust: 6 [recommend contributor recommended]. Question popularity: 5 [recommend question].