Summarize this article:

About 40% of people have warning signs before a migraine hits. These warning signs can happen as quickly as hours before an attack, while other times it may be days, and they are collectively called the "prodrome" period. Learning to look for these symptoms may help you predict when a migraine is coming on. Common symptoms of this period include tiredness, yawning, constipation, craving foods, frequent urination, and mood swings. You may also have muscle stiffness or neck pain. Some people find that certain things will trigger their migraines. For instance, stress or hormones (such as starting your period) can trigger migraines. Certain foods will trigger migraines in other people or just being too tired. Figuring out what your triggers are and reducing their occurrence can help with silent migraines. While you can't reduce the frequency of some triggers, such as your period, knowing when migraines may happen can help you prepare. One way to tell if you experience prodrome is to keep track both of common symptoms and migraines. Each night, make a note if you experienced any common prodrome symptoms. Also, make a note of when your silent migraines happen. You may notice a pattern that can help you predict your silent migraines. It can also help to make note of possible triggers, such as being extra tired or starting your period. Some people find that maintaining a healthy lifestyle helps reduce the frequency of their migraines. That means eating a balanced diet of lean proteins, whole grains, fruits, and veggies. It also means getting enough sleep (generally 7-9 hours), exercising regularly (try for 150 minutes a week), and drinking enough water (your urine should be pale or clear). Also, try to limit your alcohol.

Summary:
Recognize your warning signs. Reduce triggers. Keep a journal. Work on being healthy.