Even if you are not one of the estimated 60 million Americans affected by chronic sleeplessness, it is likely you have experienced times in your life when sleep was disrupted (or short-term insomnia.) Insomnia is one of the most common sleep disorders. For those who suffer, they have trouble falling asleep, staying asleep or both. That means rarely having the opportunity for truly adequate sleep. Insomnia sufferers wake feeling tired and begin the cycle all over again the next night.