Adequate sleep is a key component to achieving goals, such as healthier eating, more exercise, quitting smoking, improving relationships, or getting ahead at work. According to Dr. Cathy Goldstein, a sleep specialist at the University of Michigan, individuals who don’t get enough sleep are less likely to feel motivated to exercise or stick to their no-smoking plan and more likely to be in a bad mood, be less productive at work, eat unhealthy foods, and overeat. University of Michigan, February 2017