According to WebMD, for 1- to 4-week-olds: “Since newborns do not yet have an internal biological clock, or circadian rhythm, their sleep patterns are not related to the daylight and nighttime cycles. In fact, they tend not to have much of a pattern at all.” I think somebody forgot to tell my internal clock to grow up.
Data Underload #18 – Sleep Schedule
Life expectancy changes
The data goes back to 1960 and up to the most current estimates for 2009. Each line represents a country.
Divorce Rates for Different Groups
We know when people usually get married. We know who never marries. Finally, it’s time to look at the other side: divorce and remarriage.