Reasons for dizzy spells? not on any medication..

Many possibilities: There are probably at least a hundred possible causes of being dizzy. The most common and easiest to try to correct first is being a little dehydrated. Most people do not drink enough fluids throughout the day. Is your urine concentrated? If so, drink (non-caffeine containing) liquids until your pee is clear. This can sometimes help with dizziness. If this doesn't help, you may need to go see doc.