The September issue of Runner's World profiles Tera Moody, one of the best female long-distance runners in the United States, and her struggle with insomnia. Latin for "no sleep," insomnia is the inability to fall asleep or remain asleep. Insomnia is also used to describe the condition of waking up not feeling restored or refreshed. According to Runner's World, Moody, who is 28 years old, with few exceptions hasn't slept through the night since sixth grade. As a runner, Moody's body needs sleep more than usual.