You don't have to be an athlete to suffer from cramps in your feet, calves, quads, and other muscles. Many people get them while exercising, during prolonged bouts of sitting, and even while sleeping.
Although cramps may be caused by many things, being dehydrated is often at least part of the reason for cramping. Dehydration can happen to people more easily than one might think. Not drinking enough water is usually the culprit, but diuretic medications such as Lasix, Capozide, Dyazide, Hyzaar, Lopressor HCT, and many others cause frequent urination which can dehydrate the body. Large amounts of caffeine (500-600 mg or more) can also contribute to dehydration also, and sometimes an imbalance of potassium, magnesium, and calcium in the body can be a factor.
Drinking water throughout the day and especially before, during and after exercising, or activity in the heat and humidity can help prevent cramps.
Discuss any mineral supplementation with your physician if you consistently experience cramps.
An easy tip to staying hydrated: each time you use the restroom, drink a glass of water immediately after. When you exercise, drink 8-12 ounces of water for each 30 minutes of exercise.