You know those people that just hop out of bed ready to face the day? It drives us crazy, but there’s a scientific reason for it!
About one in 300 people have no problem jumping out of bed at four or five a.m. A study out of the University of California San Francisco that these people have what researchers call "advanced sleep phase." Basically, their internal clock is running hours earlier than everyone else's.
Their bodies release melatonin prematurely, which gives them that kick they need to get up and face the day. The downside is they can’t stay awake to socialize at night.
Night owls have body clocks that are delayed, but there are negative effects there. They have a hard time functioning at work and are many times sleep deprived. These advanced phases may actually run in the family, but more research is needed to confirm it.
The researchers hope their study will raise more awareness of advanced sleep phases.