You know you need to wear sunscreen to guard against sunburn on a run, but you may not know you’re also at risk for another kind of burn on those sunny summer days after your workout—one that your favorite alcoholic drink could be responsible for. Like many people, my roommate Courtney decided to celebrate the first long weekend of summer relaxing by the pool in Florida. Excited for some time off, she and her family rang in Memorial Day weekend with everyone’s favorite summer drink: ice-cold margaritas. To make picture-perfect (and equally tasty) homemade margs, Courtney squeezed “hundreds of limes,”...