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

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.

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 ...

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 ...

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 ...

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 ...

All products featured on GQ are independently selected by GQ editors. However, when you buy something through our retail links, Condé Nast may earn an affiliate commission. Much like protein powder, ...