When it is hot outside, it's hotter on a parking lot.  Intense summer heat can pose a health hazard for anyone, but it is especially dangerous when you're wearing a long-sleeved shirt, long pants, and other protective gear and riding around on hot pavement.  To minimize the risk of dehydration, heat exhaustion, and heat stroke, think carefully about your personal hydration strategy.  At the very minimum:

• Start drinking water the day before your class.
• Bring sports drinks or water (twice as much as you expect to need) to class with you.
• Avoid or limit caffeinated drinks for 24 hours before and during class.
• Avoid alcohol for 24 hours before (and during!) class.
• Bring a hat and dress for high heat.
• Remain aware of changes in your attention or concentration, headaches, or dizziness, which are signs of dehydration. Tell your instructor if you experience any of these signs.
• Don't forget to bring—and use—a sunscreen.