When you sweat, you lose fluid and your body needs to be replenished. Ergo, Samantha Cassetty, MS, RD, nutrition and wellness expert with a virtual counseling practice based in New York City, says that the more time you spend in the sun, and get sweaty, the more you need to hydrate. To do this, Cassetty says to not just make sure you drink water but to eat water-rich foods like watermelon, cucumber, and strawberries, as well.
"Another easy and fun way to keep hydrated is to pour 100% orange juice, which most people have in their fridge, into an ice cube container," Cassetty told Business Insider. "You can either insert sticks to eat as popsicles when frozen or use the frozen cubes to perk up seltzer or plain water."