Does pre-workout mess with emotions?
Because many pre-workout mixes contain caffeine and other stimulants, anxiety is a common side effect for those who take pre-workout. Note that anxiety is not directly related to pre-workout drinks, but popular ingredients in some of the more common brands may cause anxiety as a side effect. Hormonal imbalances: Some pre-workout supplements might also interfere with hormone regulation due to high amounts of caffeine, which can lead to a lack of sleep or induced restlessness. This can lead to a variety of hormonal imbalances.