WHAT IS THAT WOOZY FEELING WHEN YOU COME OUT THE BATH?

The hot water dilates your blood vessels, which lowers your blood pressure. If you then suddenly stand up, the change in posture lowers the blood pressure that much more, and the brain is temporarily deprived of adequate blood supply, and you can become dizzy or faint. Just rise more slowly next time to give your body time to adjust to the change in posture without a drop in blood pressure..