The 5 reasons you feel dizzy – when to dial 999 and the ‘bum clenching’ hack to stop it

If you’re feeling dizzy when you get up from sitting, or perhaps you feel faint and lightheaded, then it’s usually harmless.  But if it happens regularly, then it might point to something else going on inside your body. Dr Natasha Fernando, Medical Director at Medichecks, says: “When you stand up suddenly, gravity causes blood to...