If you're dealing with fatigue, lightheadedness, or one too many "hangry" moments, it's certainly possible that you're neglecting your sleep and blood sugar. But you could also be suffering from orthostatic intolerance.
Believed to be a subcategory of dysautonomia, orthostatic intolerance is a condition in which people experience certain symptoms while standing (such as fatigue and lightheadedness) and stop experiencing them once sitting or lying down. And in a world full of stressors and environmental toxins, more and more healthy young people are developing OI. "Our bodies aren't set up for the modern environment," explains Jacob Teitelbaum, M.D., an expert on chronic fatigue and OI. "The issue here is an energy crisis. When people have excessive stress in their lives and not enough energy production, suddenly when you're up and running instead of your blood pressure going up, it drops. And then you feel tired, achy, and experience brain fog."
If this sounds familiar, don't despair. You can ease a number of your symptoms before, after, and during exercise. Here's how.