Hint Water InstagramWhile we're on the subject of hydrating food and beverages, ice cold beers and sugary cocktails don't qualify. In fact, they can even have the opposite effect of keeping you hydrated, especially when it's hot.
"A lot of people find a cold beer or a cocktail refreshing, but the reality is that alcohol dilates your blood vessels, which causes your skin to flush," Cassetty said. "When this happens, you might temporarily feel hotter. Alcohol is also dehydrating, so it's best to stick with no more than a drink a day for women or two drinks per day for men."