 Z-Factor uses a formula of four all-natural ingredients to calm your mind, relax your body, so you ease into sleep faster, and you'll sleep through the night. In fact, Maureen G., one of the many people who we have testimonials from, said, this product broke a 15-year nightly cycle of lying in bed for hours before falling asleep. Or Bernard, who said, it cut down significantly the amount of times I wake up.