For new parents, getting a baby to sleep can be challenging.

Dr. Harvey Karp, author of "The Happiest Baby on the Block," said sleep deprivation is the number one complaint of new parents.

"They're tired; they can't take it," he said. "As a matter of fact, the lack of sleep was more a problem than the lack of money, in most families."

Exhausted families will try just about any tactic to get their little one to go to bed.

Beware - not all those old housewives tales work.

Karp gave us the lowdown on some sleeping myths when it comes to babies.

Myth No. 1 - Babies need to sleep in silence
"Totally, 1,000 percent incorrect," Karp said. "Inside the womb the sound is louder than a vacuum cleaner, 24/7.... Adults, we like the sounds of the waves, the sound of the wind, that kind of sound makes us feel more calm. For babies, it's essential for turning on their calming reflex."

Myth No. 2 - Never wake a sleeping baby
"Total myth: You have to wake a sleeping baby," Karp said.