You pop a pre-workout supplement to score perks during your sweat session—so what’s with the headaches, the itchiness, the GI distress? Studies show that pre-workout supplements are safe for short term use, and they do indeed add perks to your performance. But considering they’re a combination of every ingredient but the kitchen sink, it’s no surprise that your body may feel a little irritated by certain blends.
The fix may be as simple as ingesting it with more water or narrowing in on a better brand for your body. So we tapped Lonnie Lowery, Ph.D., R.D., associate professor of exercise physiology and nutrition at the University of Mount Union in Ohio and co-host of the Iron Radio podcast to help determine what exactly is causing the most uncomfortable offenses.