Journal of Psychosomatic Research: "Sleep quality versus sleep quantity: relationships between sleep and measures of health, well-being and sleepiness in college students."<br>National Sleep Foundation: "How much sleep do we really need?" "How is Sleep Quantity Different than Sleep Quality?"<br>Harvard: "Sleep and Disease Risk."<br>CDC: "Choosing healthy foods on holidays and special occasions."<br>Johns Hopkins: “The Effects of Sleep Deprivation."