We often hear about high blood pressure and how it can be dangerous to health, but low blood pressure isn’t talked about as much. For most people, a blood pressure reading lower than 90/60 mmHg may cause lightheadedness but otherwise is unlikely to cause long-term harm. However, in cases of severe disease or major injury, … Continue reading Circulatory Failure: When Blood Pressure Dips Too Low
This week, the I Spy Physiology blog answers a reader question: Why do we get dizzy when getting out of a hot tub? There may not be a better way to chase away the winter "blahs" than soaking in the hot tub or standing under a steaming shower. However, sometimes, after a lengthy soak or … Continue reading In Hot Water
Do you ever get lightheaded or feel a little dizzy after hard exercise? Maybe you have felt a little bit of “tunnel vision” after a hard sprint or when you stand up in the first hour after a long training session? This is a surprisingly common occurrence in healthy people, as recently reviewed in the … Continue reading Feeling Lightheaded after Exercise? Use the Heart in Your Legs!