Keep Kids Rehydrated for Learning
A study that correlated hydration and cognitive function in children found that dehydrated infants suffer confusion, irritability and lethargy. In young adults, even mild dehydration corresponding to 1% to 2% of body weight can lead to significant impairment of cognitive function.
Reference -
D’Anci KE et al. Hydration and cognitive function in children. NutrRev. 2006; 64(10): 457-64.