Improving the quality of your sleep doesn’t just mean sleeping longer. For example, sleeping in on the weekends throws your natural rhythm out of sync, making it harder for you to get back to a normal pattern during the week. Six hours’ shuteye is pretty much agreed upon as the minimum you need to function normally in the day, but they need to be six good hours.
One way to get proper sleep is to skip the snack before bed. Raising your blood sugar level before sleeping will have a negative effect on the quality of your sleep. Skip the nightcap too, because while alcohol can help you nod off, it may prevent you from going into a deep sleep. Without deep REM sleep—the kind that actually helps restore you—you won't feel or look refreshed in the morning.