Kourtney Kardashian explains why she 'co-sleeps' with her children

Kourtney Kardashian is sharing her best-kept parenting secrets.

In her latest article for her newly-launched lifestyle website, Poosh, the mom-of-three opened up about how she was able to get her children -- Mason, 9, Penelope, 6, and Reign, 4 -- to sleep through the night when they were babies.

"When I had Mason, co-sleeping just kind of happened naturally so I quickly embraced it...I remember going through times of trying to get him to sleep in his own bed. Many nights he would start off in his room and make his way into ours. I eventually embraced a family bed and followed his lead for when he was ready to sleep in his room. When he was seven, he started sleeping in his room on his own," Kourtney wrote.

The 39-year-old reality star also credited the DockATot baby lounger for giving her "peace of mind" that her son was protected and safe in the bed with her on-and-off boyfriend of 10 years, Scott Disick.

"Scott and I always kept it in the middle of the bed with each of us on either side to prevent Mason from rolling off the bed. Because we did so much traveling when Mason was a baby, and I took him everywhere with me, I also traveled with the DockATot. I found that as long as Mason was next to me, he adjusted to ANY time zone and slept 12 hours. This approach worked best for our lifestyle."

With Penelope (whom she named Poosh after), Kourtney admitted that she and Scott consciously made the decision to co-sleep with their daughter.

"When I was pregnant with P, I read The Attachment Parenting Book by Dr. Sears and really related to his point of view on the sleep method. He’s known for defending shared sleeping and clearing the stigma that it’s a dangerous habit."

However, when Reign was born, Kourtney says she spent the first two months sleeping in a bed in his room in order to try and get him to sleep on his own from the beginning.

"When I gave birth to Reign, I decided to have him sleep in his own room from the start. The decision was for the good of my relationship. With two kids in my bed, Scott had begun sleeping in the guest room, so I made an effort to try and get Reign to sleep in his crib. I actually spent the first two months sleeping in a bed in his room, as I was up at night nursing," she explained.

"He is my only baby who has always slept in his own bed in his own room. We didn’t use any training methods for him. By 2 1/2, he started sleeping through the whole night without waking up for the most part," she added.