Medically reviewed by Patricia Mikula, PharmD Key Takeaways Most pre-workout effects peak within 30-90 minutes, but caffeine ...

Pre-workout supplements can improve athletic performance by giving you a boost of energy, which is why they're popular in the fitness community. I started exercising regularly by taking pre-workout ...

Creatine helps increase power and muscle growth, while pre-workout offers quick energy and focus. Learn how they differ and when each supplement makes sense for you.

With the fitness market expanding, more people are getting in on gym life and investing in things to kick their sessions up a notch. Enter pre-workout, a supplement mix that promises to boost energy, ...

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 ...

Pre-workout supplements are a popular option for those looking to gain muscle. Designed to be consumed 30–60 minutes before your workout, pre-workout supplements commonly contain stimulating ...

Rachael Link is a registered dietitian and health writer based in San Francisco. She completed her undergraduate degree at the University of Central Missouri and holds a master’s degree from New York ...

While there’s no single definition of what a pre-workout supplement should contain, many include various combinations of caffeine, beta-alanine, creatine, nitrates, and branched-chain amino acids ...

Pre-workout supplements, also called “pre-workouts,” are meant to give you energy for when you exercise. The main ingredient in most of them is caffeine. These supplements often come in pill or powder ...

People may take pre-workout supplements to delay fatigue and boost their energy levels so that they can make the most out of their exercise. Some manufacturers design pre-workout supplements ...

Leigh Weingus is a New York-based freelance writer and former senior editor at HuffPost, Elite Daily and Mindbodygreen. Her work has been featured in Well+Good, Glamour, Parade, Bustle, NBC News and ...