But there are some things you can do to encourage good napping habits: Avoid keeping a child up too late at night, which can prevent him from sleeping well during the day. And don't wait too long to begin his nap. Also, rocking or nursing a child to sleep at naptime is a mistake.
Losing It: Average Age of Virginity Loss in the U.S. According to a 2006 study, men and women in the United States first experienced sexual intercourse at age 17 on average. A 2007 study by Mathmatica Policy Research for The Kinsey Institute notes that 49% of women lose it by age 17, while 46% of men lose it by the same age.
Common STDs. Chlamydia. This most common bacterial STD is found in 20 to 40 percent of teens having sex outside of marriage. Up to 40 percent of all girls between the ages of 15 and 19 are infected -- the highest chlamydia infection rate of any age group.