Most pre-workout supplements are considered safe for many adults, but they are not essential for health or exercise performance. Their ingredient mixes vary widely by brand. Ingredients like caffeine, ...

Researchers know that caffeine can improve mental processes, strength, power, and endurance during a workout. A 2016 study found that people who consumed pre-workout drinks containing caffeine saw a ...

Close-up of a woman's hand with a measuring spoon of white BCAA powder. Protein shake for athletes and athletes. If you’ve trained your social-media algorithms to serve you even a little bit of ...

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

The best pre-workouts with creatine ranked by dose, caffeine, pump support, testing signals, value, and Amazon availability.

Pre-workout supplements are associated with side effects like digestive issues, water retention, and headaches. Adjusting your dosage or avoiding supplements with certain ingredients may help. To ...

If you’re training intensely and could do with a little extra energy at the gym, then a pre-workout could be for you. Consider it a bookend to a post-workout protein shake — it’s a supplement that ...