Concentration Hack: Hydrate
If you skimp on water, your focus goes downhill.
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Neurons are largely made up of water. That might explain in part why H2O is so crucial to staying sharp, since any disruption in hydration affects how well signals are transmitted and received in the brain, he explains.
Your brainpower starts to blunt when you’ve lost about two percent of your body weight due to dehydration. You could hit that deficit from skimping on water between last night’s dinner and today’s lunch or during a moderate, hour-long workout in the heat, explains study co-author Mindy Millard-Stafford, Ph.D., director of the Exercise Physiology Laboratory at Georgia Institute of Technology.