Here's the easiest, cheapest thing you can do trade better
Have a glass of water (or a cherry coke)
The test involved a women playing a card game that required focus.
"When the women were dehydrated they had about 12 percent more total errors" in the game, said Stachenfeld.
She repeated the tests after the women drank sufficient water, and their performance improved. "We were able to improve executive function back to normal - in other words-- back to the baseline day - when they rehydrated," the scientist said.