Get Better Grades in School Without Studying More
Get better grades in school without studying more by drinking a glass of water prior to any test. Studies have shown that if you are dehydrated, your brain does not function as well.
In fact drinking a glass of water 20-45 minutes before a test will help you perform better, which will help your grades! And, the best part of it, you don’t have to study more.
So, drink water and stay hydrated.
A clip from the research is below (National Institute of Health: Water, Hydration, and Health )
Several recent studies have examined the utility of providing water to school children on attentiveness and cognitive functioning in children.61–63 In these experiments, children were not fluid restricted prior to cognitive testing, but were allowed to drink as usual. Children were then provided with a drink or no drink 20–45 minutes before the cognitive test sessions. In the absence of fluid restriction and without physiological measures of hydration status, the children in these studies should not be classified as dehydrated. Subjective measures of thirst were reduced in children given water,62 and voluntary water intake in children varied from 57 ml to 250 ml. In these studies, as in the studies in adults, the findings were divergent and relatively modest. In the research led by Edmonds and colleagues,61, 62 children in the groups given water showed improvements in visual attention. However, effects on visual memory were less consistent, with one study showing no effects of drinking water on a spot-the-difference task in 6–7 year old children 61 and the other showing a significant improvement in a similar task in 7–9 year old children62In the research described by Benton and Burgess,63 memory performance was improved by provision of water but sustained attention was not altered with provision of water in the same children.
Taken together these studies indicate that low to moderate dehydration may alter cognitive performance. Rather than indicating that the effects of hydration or water ingestion on cognition are contradictory, many of the studies differ significantly in methodology and in measurement of cognitive behaviors. These variances in methodology underscore the importance of consistency when examining relatively subtle chances in overall cognitive performance. However, in those studies in which dehydration were induced, most combined heat and exercise, thus it is difficult to disentangle the effects of dehydration on cognitive performance in temperate conditions, from the effects of heat and exercise. Additionally, relatively little is known about the mechanism of mild dehydration’s effects on mental performance. It has been proposed that mild dehydration acts as a physiological stressor which competes with and draws attention from cognitive processes64. However, research on this hypothesis is limited and merits further exploration.