Unless your doctor places you on a fluid-restricted diet, you should drink at least as much as your body seems to need. Dehydration may develop quite suddenly, particularly during hard work or exercise. Beer, wine, and other alcoholic drinks can actually increase fluid loss, decrease the body's ability to keep itself cool, and increase the risk for dehydration. If your body is under stress, it is even more important to get essential nutrients. It is also well to remember to keep hot foods hot and cold foods cold.
Food spoils more quickly at warm temperatures.
Careful handling of food becomes even more important to avoid food poisoning at picnics and cookouts. If you engage in sports or other physical activities, be sure to take a break in a cool area from time to time. If your job involves hot work, rest breaks must be routinely scheduled. Do not push yourself too hard during a sudden heat wave. Your body will need at least a week to get used to a major change in weather.