We all know the struggle, dinner has been eaten, teeth have been brushed and it is time for BED.
It can be pretty difficult to get you beautiful babies to go to bed at a reasonable hour, but it has now been discovered that letting them stay up late is very bad for their health.
New research has emerged, which suggests that young children who are tucked up in bed before 8pm are less likely to become obese as teenagers.
The research, which was carried out in The University of Ohio, stated that delaying a child's bedtime by just an hour, to after 9pm, could DOUBLE a child's chances of becoming obese in later years.
Dr Sarah Anderson, the lead professor on this project, said her findings "reinforces the importance of establishing a bedtime routine."
"It's something concrete that families can do to lower their child's risk and it's also likely to have positive benefits on behaviour and on social, emotional and cognitive development" she went on to say.
According to the study, the majority of young children are "biologically preprogrammed to be ready to fall asleep well before 9 pm."
Obesity can set kids up for a lifelong struggle with weight and various health problems, such as heart disease and diabetes.