Hypohydration and Cognition

A recent study examined the influence of hypohydration (a loss of <1% of body mass, changes in urine osmolality, body temperature, and thirst<) on cognition in 101 individuals randomized to either consume or not consume 300 mL of water when subjected to temperatures of 30°C for 4 hours. The participants were blinded and unaware of the purpose of the experiment. While the authors concluded that drinking water benefited cognitive function, the primary weakness of...