The cranial nerve X, also known as the vagus nerve, is responsible for controlling the functions of the heart, lungs, and digestive system. While diseases affecting this nerve can be debilitating, there are several antonyms - or opposites - for the phrase "cranial nerve X diseases" that represent good health practices. These include proper exercise, a balanced diet, and regular checkups with a healthcare provider. Eating a diet full of fruits, vegetables, and lean proteins and keeping an active lifestyle can help prevent many health issues, including those related to the vagus nerve. Additionally, practicing stress-reduction techniques like meditation, deep breathing, and yoga can also promote overall wellness.