Drink water. Dizziness is often the

Drink water. Dizziness is often the result of dehydration. Dehydration can be caused by not drinking enough water generally or failing to rehydrate during and after exercise. It can also be an issue when you're suffering from an illness that causes vomiting, diarrhea or fever, which can cause you to lose a lot of fluid. Once the worst of the dizziness has passed, you should drink more water and other fluids.[1]
If you're finding it difficult to drink a lot of water, try drinking other fluids like energy drinks, hot tea with a little sugar, soups and broths, or diluted fruit juices.