Answer: Body muscles.
Step-by-step explanation:
Exercise does not slow down the activity of any type of muscle. In fact, exercise generally increases the activity of muscles, including skeletal muscles (which are the muscles responsible for movement), as well as cardiac muscle (which is the muscle of the heart). Additionally, exercise can also improve the health and function of smooth muscles (which are found in the walls of internal organs) through improved blood flow and other physiological adaptations.