A study by the National Sleep Foundation found that more than half of pregnant women take at least one nap during the workweek, and 60 percent take at least one weekend nap.

http://www.babycenter.com/0_the-basics-of-good-sleep-during-pregnancy_7820.bc

A study by the National Sleep Foundation found that more than half of pregnant women take at least one nap during the workweek, and 60 percent take at least one weekend nap.