This is because, based on studies conducted by a variety of universities including Harvard and Stanford.
Sleep is a performance booster with a direct impact on your:
Sleep improves memory. According to experts, memory can be broken into the three components of “acquisition,” “consolidation,” and “recall.” Predictably, the acquisition and recall phases occur when you are awake, taking in new experiences and then using the resulting memories to affect his or her actions (e.g. knowing which hallway their locker is in, and how to open it). The consolidation portion, where experiences are processed, organized, and then stored as memories, takes place when you are sleeping. Many studies suggest that inadequate sleep can deprive your child of this crucial phase, limiting the ability to learn and remember what was learned.
Sleep aids in critical thinking. While researchers are working to better understand the links, studies indicate that lack of sleep impairs the frontal lobe of the brain. This inhibits so called “executive functions” that affect problem-solving and judgement, as well as organizational and planning skills…all traits necessary for success in the classroom.
Sleep improves concentration. A lack of quality sleep can also potentially shorten your child’s attention span, limit his or her ability to concentrate, and ultimately can lead to mistakes.
Sleep speeds up reaction time. A lack of sleep, studies have shown, can sometimes triple reaction time, making them less able to think on their feet.
Sleep improves mood. Inadequate sleep can not only make your child irritable, it can potentially trigger anxiety or depression, and put stress on personal relationships, such as those with classmates and teachers.