Jeffrey Martinez couldn't remember a time when he'd slept so peacefully, when morning felt so good.
For most of his adult life, he'd had trouble sleeping. He typically had to drag himself out of bed in the morning and felt tired and irritated throughout the day.
"I tossed and turned all night," he said recently.
He was so sleepless four years ago, Martinez, goaded by his girlfriend, checked into the Center for Sleep Disorders at Gwinnett Medical Center in Duluth.