The fast pace of life in the 21st century and the round-the-clock demand of career, family, social life, and community involvement cut back on a person’s sleep. Too many nights of sleeping less than what is adequate is partly responsible for having low energy levels that impact on a person’s performance at work, at home and beyond. In general, a person’s concentration and the amount and quality of his work decline by 30% because of lack of sleep. Related: 5 Healthy Habits To Help You Sleep According to a 2008 Sleep in America Poll conducted by the National Sleep Foundation (NSF), almost 50 million Americans have sleeping problems that adversely affect their personal, home and work life. 29% of the poll respondents dozed off or became sleepy at work, 36% fell asleep or became drowsy on the wheels, and 20% had their sex life affected.