[Image: Courtesy of Carleen Hirschi]When the heat is on, a cool drink can really hit the spot. You already know that fruit smoothies are a smart and simple option for busy spa pros, but this month you can ensure that your blended beverages are extra hydrating by using water-rich ingredients like the ones in this Watermelon-Mint Protein Shake from the M’lis Healthy Eats cookbook (M’lis Company, 2018). In addition to thirst- quenching coconut water and melon, the drink is loaded with vitamins, antioxidants and protein, thanks to the brand’s Instant Meal Shake mix. Stick with this simple, six-ingredient recipe and you’ll stay cool—and healthy—all summer long!