Keeping hydrated with plenty of water is important during exercise. Here are some things to think about:
• Light physical activity requires at least 7 to 10 glasses of water per day, plus the fluid you get in your daily food consumption. Additional water should be ingested for your body to function properly during hot weather exercise.
• Vegetables and fruits are about 80 percent water, bread 35 percent, and rice or pasta dishes contain around 70 percent water. You can see that ingesting too little water is seldom a problem, unless you are participating in heavy physical activity.