Water: How much should you drink every day? To read this article in its original context: http://www.mayoclinic.com/health/water/NU00283. Water is essential to good health, yet needs vary by individual. These guidelines can help ensure you drink enough fluids.
Pizza can be left in room temperature for up to two hours -- or one hour in hot temperatures above 90 degrees Fahrenheit -- and still be safe to eat, according to the USDA.hile you might not get sick from eating pizza that's more than four days old, you'll increase your risk for foodborne illness by doing so. Throw away any pizza that's been sitting out in room temperature for more than two hours.
Keep It Warm. If you're going to be eating pizza within a short time, keep it warm in the oven rather than leaving it out on the counter. Bacteria multiply most rapidly at temperatures between 40 and 140 degrees Fahrenheit, according to the National Institute of Diabetes and Digestive and Kidney Diseases.