For attaining and maintaining mental and emotional health you should get regular exercise and eat nutritious food because exercise relieves stress. Exercise<span> and other physical activity produce endorphin—chemicals in the brain that act as natural painkillers—and also improve the ability to sleep, which in turn </span>reduces stress<span>. </span>
serves as a source of neural stem cells (NSCs) in the process of adult neurogenesis.
B or c because they both are very good answers sorry i couldn't help that much :(
You are studying the anatomy of the body and organs.
