Q&A: Hydration in the summer

DEAR MAYO CLINIC: I am prone to kidney stones, so I know it's important for me to stay hydrated while I exercise. But do I need to change what I drink in the summer? A friend mentioned that I might be better with a sports drink versus water. I'm also wondering how much I should drink. Can you provide any advice?
DEAR MAYO CLINIC: I am prone to kidney stones, so I know it’s important for me to stay hydrated while I exercise. But do I need to change what I drink in the summer? A friend mentioned that I might be better with a sports drink versus water. I’m also wondering how much I should drink. Can you provide any advice?