A person who is prone to experiencing dizziness or lightheadedness should use the following tips to reduce their risk of falling or fainting:
Getting up slowly after sitting or lying down.
Drinking lots of water, especially in hot weather or during exercise.
Eating or drinking something sugary or with simple carbohydrates when feeling faint.
Lying or sitting down until the episode passes.
Getting enough sleep.
Avoiding caffeine, tobacco, and alcohol.
Limiting salt intake.