Are there any side effects? You may experience some ... as this will differ from brand to brand. How often should I take ...

They are not regulated by the Food and Drug Administration (FDA) and are known to cause a wide variety of side effects. Each pre-workout brand can be formulated differently, so the potential side ...

Taking pre-workout can cause side effects like nausea and shakiness due to high caffeine content. While pre-workout benefits body-builders and athletes, the average gym-goer can opt for coffee.