1.   And Americans tend to have lousy sleep habits.

2.   Anthropologists have identified two tribes in Indonesia with polyphasic sleep habits, which is sleeptalk for resting in several bursts, instead of all at once.

3.   A more durable solution, researchers reported, is behavioral therapy to instill better sleep habits.

4.   It affects class attendance, it affects your concentration ability, it affects your dietary habits, your sleep habits.

5.   Many people simply develop bad sleep habits.

6.   Most sites offer a range of advice on topics like baby names, feeding, child-development milestones and sleep habits.

7.   Or they make matters worse by practicing poor sleep habits or resorting to over-the-counter nostrums that give rise to other problems.

8.   True, teen-agers have always had erratic sleep habits.

9.   Researchers at Indiana State University found that the sleep habits of ducks are similar to those of humans.