Once you hit the snooze button once, it's easier to hit it again. And again. And 15 to 20 minutes of snoozing means 15 to 20 minutes less of running, which you may then rationalize as not even being worth getting up for--so you skip the run altogether. Or you could accidentally shut off your alarm and miss the run. Hitting snooze can also hurt your sleep quality, according to CNN. Focus on getting up the first time your alarm goes off. You can also give a new alarm clock a shot.