A lack of zzz's can result in
decreased brainpower — a major issue for high schoolers driving early in the morning — as well as an increased chance of mood disorders (such as depression), obesity and risky behaviors, Dunietz says.
Professor Helen Christiansen of the Australian National University in Canberra found that, in three separate studies using 2500 women, women experience no
decreases in
brainpower during and after pregnancy.