There are lots of things that can mess up your vacation, but at least sleep deprivation is something you can prepare for.

Getting a good night’s sleep is hard. A third of all American adults report getting less than the daily recommended amount of sleep nearly every night. Too little noise, and the mind starts to race.

Using a melodic song you enjoy as an alarm sound can potentially reduce feelings of grogginess upon waking. However, waking suddenly from sleep may have negative effects. Many people use an alarm ...