The day my coffee grinder became a flaxseed grinder was the day I figured out how coffee affected my sleep patterns. For some “unknown” reason I was waking up at 2 a.m., unable to fall back asleep. Given I was in my late 40s, health professionals attributed my insomnia to peri-menopausal symptoms. But hormone tests discounted that theory. Instead, I stopped drinking coffee and voila! A full night’s sleep.