I'm Sarah Bernier Olin, a stress reduction and meditation expert. It's one thing to be a night owl. But it's another thing to suffer from chronic sleep deprivation because you can't get to sleep at night. You see, sleep is essential. It's that critical time when your body repairs itself from the day's stresses. Cutting that process short may lead to health issues, such as obesity, diabetes and heart disease. Some sleep problems are easy to diagnose, like insomnia. But others, like sleep apnea or shift work sleep disorder, can be tougher to pinpoint. The good news is most sleep problems are treatable. So if drifting off is hard for you most nights, or you often wake up feeling tired, talk to your doctor to find out why. There are lots of treatments available to help you get back to sleep.