@agoldstein1, I'm sorry we didn't get to your question during the broadcast. Here's Erica's answer: “A sports drink is not necessary for exercise lasting less than 60 min. You are likely not losing enough sodium or water. However, if it is hot enough and of high enough intensity, a sports drink would not be harmful, especially if you haven’t eaten well before the onset of exercise and don’t have time to eat following (e.g., if exercising in the morning and no plans to eat until later in the day).”