While birth of a child is a matter of joy to parents it has drastic effects on first-time mothers' sleep for up to six years finds a study. The findings showed in the first three months after birth mothers slept one hour less compared with pre-pregnancy period while father's sleep duration decreased by 15 minutes. While having children is a major source of joy for most parents it is possible that increased demands and responsibilities associated with the role as a parent lead to shorter sleep and decreased sleep quality even up to six years after birth of the first