Hi Lauren. Are you in good health otherwise? Are you on any medications?
You're likely having fasciculations. These are involuntary, rapid contractions of muscle fibers that come and go. They are common in otherwise healthy individuals and are not normally cause for concern. They are most often associated with anxiety, stress, poor sleep, excess caffeine consumption and other "lifestyle" issues that can be addresed. Once these issues are addressed, the fascics improve.
Yes, eating a balanced diet (i.e. avoid junk food and caffeine) and exercising regularly. Individuals with benign fasciculation syndrome often take yoga/meditation or mindfulness classes as well to manage stress withouth medications. These things often improve sleep as well, which helps tremendously. If these measures don't cause the fascics to go away, see your GP and have some basic blood tests done to rule out an electrolyte imbalance or thyroid issues, etc, which might be contributing to the problem.
You're welcome. Hope all goes well for you.