Is pre-workout good for your body?
Pre-workouts are generally considered “high-risk dietary supplements” because most of them contain ingredients that have unknown or inadequate safety data. Some of these ingredients have been known to cause harmful health effects and have even led to hospitalizations. Taking this pre-workout supplement daily isn’t necessarily harmful, but over time, the body can build up a tolerance to it,” Lena Beal, MS, RDN, LD, an Atlanta-based registered and licensed dietitian and spokesperson for the Academy of Nutrition and Dietetics, told Verywell.Your body metabolizes caffeine and sugar quickly. Both ingredients can give you an initial energy boost followed by a sharp drop when they leave your system. Kidney and liver function: Although the research is mixed, some studies suggest that preworkout supplements can impair kidney and liver function.Most pre-workout mixes are known to contain more than 200 milligrams of caffeine, the equivalent of two cups of coffee, which can improve energy levels but also increase the risk of high blood pressure, arrhythmias and potentially a heart attack in patients with severe coronary disease.Pre-Workout Powders and Stimulant Overload Reduced blood flow to the kidneys can cause ischaemic injury. Furthermore, these products often contain extremely high doses of certain vitamins, like niacin (B3), which can be toxic to the liver and kidneys in excess.