Medically reviewed by Aviv Joshua, MS, RDNKey TakeawaysPre-workout supplements may be helpful for some athletes, but they ...

C4 Pre-Workout is a workout supplement line from Cellucor that people may take before exercise to help increase energy, alertness, and strength. They contain caffeine and creatine, which may help ...

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, ...

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

Jessica Braun Gervais is a Chicago-based freelance writer specializing in health, wellness and fitness. She earned a B.A. in Journalism from Columbia College and has written content for various health ...

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 ...

Let’s be real—you don’t need a pre-workout supplement to have a great lift or make progress in the gym. But on days when your energy is dragging or motivation is lacking, the right pre-workout can be ...

Jenessa Connor is a writer with experience writing health, fitness, and nutrition topics for publications, websites, companies, and experts in wellness spaces. Most pre-workout supplements should be ...

Leigh Weddle, PharmD, is a licensed pharmacist with over 10 years of experience in retail and clinical settings. Pre-workout supplements combine various amino acids and stimulants to help boost energy ...