According to the National Sleep Foundation guidelines, adults between the ages of 18 to 60 should get at least 7 hours of rest nightly. While only 35% of adults sleep less than the recommended amount, nearly half of people report daytime sleepiness at least 3 times per week. You might attribute your fatigue to stress or a bad mattress, but the culprit might reside within your stages of sleep. You may experience certain interruptions in the cycle, which could affect how you feel in the morning. You can get up feeling energized and ready for the day by ensuring your body and mind receive the full benefits of quality sleep.