Hasta La Gadget!

For most of us our circadian rhythms are out of sync. This makes it hard
to get up in the mornings and often keep us awake at night. This is due,
in part at least, to the uneven sleep schedules that most of us have by
differing our sleeping hours on the weekends to accommodate social
gatherings. Researchers in Europe have created the phrase "social jet
lag" to describe the effects of this prevalent practice.