Medically reviewed by Allison Herries, RDN Key Takeaways Pre-workout supplements can give you energy but may cause jitters or ...

Using pre-workout supplements every day can make them less effective over time. High doses of caffeine in these supplements can cause side effects like anxiety and heart palpitations. Pre-workout ...

Plenty of people use pre-workout supplements to boost their training efforts. But new research suggests that regularly using pre-workout could unintentionally counteract your healthy living goals. The ...