According to the 9 New Sleep Rules by Sarah Begley you should stop using the snooze button.  Why?  Even when you get a solid 8 hours, dozing off for a few more minutes after the alarm can have the opposite of its intended effect.  That’s because you may slide into a new sleep cycle, leading to the groggy sensation that researchers call sleep inertia.  This impairs things like alertness, memory and reaction time, and it creates the impression that you got a lot less rest than you did.  If you snooze because you’re so tired you can’t peel yourself out of bed, something else is probably wrong.  Try setting a stricter bed- and wake time, and be sure to let more natural light into your bedroom in the morning to reset your circadian rhythm.  Sweet Dreams!